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Journal articles on the topic '3-nitrophenylhydrazine'

Author: Grafiati

Published: 6 August 2021

Last updated: 27 July 2025

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1

Erdem, Ahmet, Hasan Genc, Nejdet Sen, Rafet Kilincarslan, and Emin Erdem. "The Synthesis and Reactions of Novel Pyrazole Derivatives by 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandione Reacted with Some Hydrazones." Revista de Chimie 68, no. 1 (2017): 143–46. http://dx.doi.org/10.37358/rc.17.1.5407.

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We report some novel pyrazole derivatives taking 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandione, 1. For this, 4-phenylcarbonyl-5-phenyl-2,3-dihydro-2,3-furandione, 1 was reacted with benzaldehyde(2- or 4-fluorophenyl)hydrazone to give 4-benzoyl-1-(2- or 4-fluorophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid 2a,b. Pyrazol derivative containing 2-fluorophenyl group 2a was converted into carboxylic chloride derivative 3a by thionyl chloride and then the compound 4a was obtained from reaction ammonia with compound 3a. In the next step, 4-benzoyl-1-(2-fluorophenyl)-5-phenyl-1H-pyrazole-3-carb

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2

Raju, R. V. Prabhakara, and R. Raghava Naidu. "Spectrophotometric Determination of Decamethrin and Its Residues in Insecticidal Formulations and in Water." Journal of AOAC INTERNATIONAL 77, no. 3 (1994): 748–51. http://dx.doi.org/10.1093/jaoac/77.3.748.

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Abstract Three spectrophotometric methods were developed for the microdetermination of decamethrin in insecticidal formulations and in water. The methods are based on the hydrolysis of decamethrin with methanolic KOH to 3-phenoxybenzaldehyde; condensation of the hydrolysis product with 2,4- dinitrophenylhydrazine (2,4-DNPH), 4-nitrophenylhydrazine (4-NPH), or 2,4,6-trinitrophenylhydrazine (2,4,6-TNPH) under alkaline conditions; and measurement of the condensates at the absorption maxima of 444,535, and 480 nm, respectively. The relationship between absorbance and concentration was linear in th

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3

PRATIMA, VERMA, and K. GUPTA V. "A New Sensitive Method for Determination of 4-Nitrophenylhydrazine using a New Reagent System." Journal of Indian Chemical Society Vol. 63, Aug 1986 (1986): 767–68. https://doi.org/10.5281/zenodo.6297552.

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Department of Chemistry, Ravishankar University, Raipur-492 010 <em>Manuscript received 3 February 1984, revised 29 July 2986, accepted 12 August 1986</em> A new sensitive method for the determination of 4-nitrophenylbydrazine has been proposed. The method is based on the oxidation of 4-nitrophenylhydrazine to 4-nitrophenyldiazonium chloride with selenious acid in strong HCl medium. The diazonium salt is then coupled with <em>N</em>-(1-naphthyDethylenediamine (NEDA) in HCl medium. Violet dye formed is measured at 545 nm against reagent blank. The reaction is fast, sensitive, and repr

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4

Amann, Laura Sophie, Oliver Frank, Corinna Dawid, and Thomas Frank Hofmann. "The Sensory-Directed Elucidation of the Key Tastants and Odorants in Sourdough Bread Crumb." Foods 11, no. 15 (2022): 2325. http://dx.doi.org/10.3390/foods11152325.

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Sourdough bread is highly enjoyed for its exceptional flavor. In contrast to bread crust, which has been investigated intensively, the knowledge on bread crumb is rather fragmentary. In this study, the taste-active compounds of sourdough bread crumb were identified and quantified. By means of recombination experiments and omission tests, the authentic flavor signature of sourdough rye bread crumb was decoded and recreated with ten key tastants and eleven key odorants. Based on the final taste and aroma recombinants, a fast and sensitive ultra-high-performance liquid chromatography-tandem mass

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5

Liu, Zhiqian, S. Richard O. Williams, Joe L. Jacobs, Aodan S. O. Neachtain, and Simone Rochfort. "A Chiral-LC-MS Method for the Simultaneous Quantification of Short-Chain Fatty Acids and D/L-Lactate in the Ruminal Fluid of Dairy Cows." Molecules 29, no. 6 (2024): 1398. http://dx.doi.org/10.3390/molecules29061398.

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Short-chain fatty acids (SCFA) and lactate in ruminal fluid are products resulting from the microbial fermentation of substrates and can be used to reflect the composition and activity of the ruminal microbiome. Determination of SCFA and D-/L-lactate in ruminal fluid currently requires two separate protocols, which is time-consuming and costly. In this study, we have optimised and validated a simple and unified 3-nitrophenylhydrazine (3-NPH) derivatisation protocol and a 20 min chiral-LC-MS method for the simultaneous quantification of all SCFA and D- and L-lactate in ruminal fluid. This metho

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6

Mótyán, Gergő, Barnabás Molnár, János Wölfling, and Éva Frank. "Microwave-Assisted Stereoselective Heterocyclization to Novel Ring d-fused Arylpyrazolines in the Estrone Series." Molecules 24, no. 3 (2019): 569. http://dx.doi.org/10.3390/molecules24030569.

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Microwave-assisted syntheses of novel ring d-condensed 2-pyrazolines in the estrone series were efficiently carried out from steroidal ,-enones and hydrazine derivatives. The ring-closure reaction of 16-benzylidene estrone 3-methyl ether with hydrazine in acetic acid resulted in a 2:1 diastereomeric mixture of two 16,17-cis fused pyrazolines, which is contrary to the former literature data for both stereoselectivity and product structure. However, the cyclization reactions of a mestranol-derived unsaturated ketone with different arylhydrazines in acidic ethanol furnished the heterocyclic produ

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7

Utz, Florian, Andrea Spaccasassi, Johanna Kreissl, et al. "Sensomics-Assisted Aroma Decoding of Pea Protein Isolates (Pisum sativum L.)." Foods 11, no. 3 (2022): 412. http://dx.doi.org/10.3390/foods11030412.

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The aroma of pea protein (Pisum sativum L.) was decrypted for knowledge-based flavor optimization of new food products containing pea protein. Sensomics helped to determine several volatiles via ultra-high performance liquid chromatography tandem mass spectrometry and 3-nitrophenylhydrazine derivatization. Among the investigated volatiles, representatives of aldehydes, ketones, and acids were reported in literature as especially important in pea and pea-related matrices. After validation of the method and quantitation of the corresponding analytes, sensory reconstitution as well as omission st

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8

Li, Cheng, Zhiqian Liu, Carolyn Bath, Leah Marett, Jennie Pryce, and Simone Rochfort. "Optimised Method for Short-Chain Fatty Acid Profiling of Bovine Milk and Serum." Molecules 27, no. 2 (2022): 436. http://dx.doi.org/10.3390/molecules27020436.

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Short-chain fatty acids (SCFA, C2-C5) in milk and serum are derived from rumen bacterial fermentation and, thus, have the potential to be used as biomarkers for the health status of dairy cows. Currently, there is no comprehensive and validated method that can be used to analyse all SCFAs in both bovine serum and milk. This paper reports an optimised protocol, combining 3-nitrophenylhydrazine (3-NPH) derivatisation and liquid chromatography-mass spectrometry (LC-MS) analysis for quantification of SCFA and β-hydroxybutyric acid (BHBA) in both bovine milk and bovine serum. This method is sensiti

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9

Alam, M. Mahmud, M. T. Uddin, Mohammed M. Rahman, Abdullah M. Asiri, and M. A. Islam. "A reliable electrochemical sensor developed based on ZnO/SnO₂ nanoparticles modified glassy carbon electrode." Advances in Biochips 2, no. 1 (2021): 24–34. http://dx.doi.org/10.25082/ab.2021.01.002.

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The 4-NPHyd (4-nitrophenylhydrazine) electrochemical sensor assembled using wet-chemically prepared ZnO/SnO2 nanoparticle (NPs) decorated a glassy carbon electrode (GCE) with conductive Nafion binder. The synthesized NPs characterized by XPS, ESEM, EDS, and XRD analysis. The calibration of the proposed sensor obtained from current versus concentration of 4-NPHyd found linear over a concentration (0.1 nM ~ 0.01 mM) of 4-NPHyd, which denoted as the dynamic range (LDR) for detection of 4-NPHyd. The 4-NPHyd sensor sensitivity calculated using the LDR slope considering the active surface of GCE (0.

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10

Sukumar, Chatterjee, K. Pillai Ajai, and K. Gupta V. "A simple and sensitive spectrophotometric determination of vanadium(v) in various environmental samples." Journal of Indian Chemical Society Vol. 78, Sep 2001 (2001): 479–81. https://doi.org/10.5281/zenodo.5902592.

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School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492 010, India <em>Manuscript received 19 September 2000, revised</em><em> 26 March 2001, accepted 31 March 2001</em> A simple and sensitive spectrophotometric method is proposed for the determination of vanadium in traces, which is based on the oxidation of 4-nitrophenylhydrazine to 4-nitrophenyldiazoniumchloride with vanadium(v) in strong hydrochloric acid medium. The diazonium salt is subsequently coupled with phloroglucinol to give a reddish orange coloured dye having maximum absorption at 440 nm. Beer

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11

Han, Jun, Rehan Higgins, Mark D. Lim, et al. "Isotope-labeling derivatization with 3-nitrophenylhydrazine for LC/multiple-reaction monitoring-mass-spectrometry-based quantitation of carnitines in dried blood spots." Analytica Chimica Acta 1037 (December 2018): 177–87. http://dx.doi.org/10.1016/j.aca.2018.01.045.

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12

Osinaga, Faith O., Kenneth Blakeslee, Madan K. Kharel, Yan Waguespack, and S. Victor Hsia. "Method validation of gamma-Hydroxybutyric acid detection upon Herpes Simplex Virus-Type 1 infection using LC-MRM-MS with 3-nitrophenylhydrazine derivatization." Journal of Pharmaceutical and Biomedical Analysis 210 (February 2022): 114547. http://dx.doi.org/10.1016/j.jpba.2021.114547.

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13

Luo, Lan, Congcong Gu, Mingxian Li, Xiangyuan Zheng, and Feng Zheng. "Determination of residual 4-nitrobenzaldehyde in chloramphenicol and its pharmaceutical formulation by HPLC with UV/Vis detection after derivatization with 3-nitrophenylhydrazine." Journal of Pharmaceutical and Biomedical Analysis 156 (July 2018): 307–12. http://dx.doi.org/10.1016/j.jpba.2018.04.024.

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14

Toàn, Dương Ngọc, та Triệu Thanh Tùng. "TỔNG HỢP MỘT SỐ HỢP CHẤT DỊ VÒNG 2-AMINOPYRIMIDINE VÀ 2-PYRAZOLINE XUẤT PHÁT TỪ CÁC KETONE ,-KHÔNG NO CÓ CHỨA VÒNG QUINOLINE". TNU Journal of Science and Technology 227, № 08 (2022): 427–32. http://dx.doi.org/10.34238/tnu-jst.5879.

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Nhiều dẫn xuất của quinoline-2-on đã được các nhà hóa học hữu cơ nghiên cứu để tổng hợp và đánh giá các đặc tính sinh học do các tác dụng sinh học khác nhau của chúng, bao gồm các hoạt động kháng khuẩn, chống oxy hóa, chống viêm, chống ung thư. Sự kết hợp của 4-hydroxyquinoline-2-one với 2-amino-pyrimidine hoặc 2-pyrazoline có thể hình thành các hoạt tính mới. Trong bài báo này, tác giả trình bày kết quả tổng hợp một số hợp chất 2-aminopyrimidine và 2-pyrazoline mới đi từ các hợp chất ketone α,β-không no có chứa vòng quinoline. Các hợp chất 2-aminopyrimidine mới (3 hợp chất) được tổng hợp bằng

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15

El-Kafrawy, Dina S., Tarek S. Belal, Mohamed S. Mahrous, Magdi M. Abdel-Khalek, and Amira H. Abo-Gharam. "Validated Spectrophotometric and RP-HPLC–DAD Methods for the Determination of Ursodeoxycholic Acid Based on Derivatization with 2-Nitrophenylhydrazine." Journal of AOAC INTERNATIONAL 100, no. 3 (2017): 677–85. http://dx.doi.org/10.5740/jaoacint.16-0286.

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Abstract This work describes the development, validation, and application of two simple, accurate, and reliable methods for the determination of ursodeoxycholic acid (UDCA) in bulk powder and in pharmaceutical dosage forms. The carboxylic acid group in UDCA was exploited for the development of these novel methods. Method 1 is the colorimetric determination of the drug based on its reaction with 2-nitrophenylhydrazine hydrochloride in the presence of a water-soluble carbodiimide coupler [1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride] and pyridine to produce an acid hydrazide deri

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16

Meng, Xiangjun, Huanhuan Pang, Fei Sun, et al. "Simultaneous 3-Nitrophenylhydrazine Derivatization Strategy of Carbonyl, Carboxyl and Phosphoryl Submetabolome for LC-MS/MS-Based Targeted Metabolomics with Improved Sensitivity and Coverage." Analytical Chemistry 93, no. 29 (2021): 10075–83. http://dx.doi.org/10.1021/acs.analchem.1c00767.

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17

Uran, Steinar, Kristin Eitrem Landmark, Gro Hjellum, and Tore Skotland. "Quantification of 13C pyruvate and 13C lactate in dog blood by reversed-phase liquid chromatography–electrospray ionization mass spectrometry after derivatization with 3-nitrophenylhydrazine." Journal of Pharmaceutical and Biomedical Analysis 44, no. 4 (2007): 947–54. http://dx.doi.org/10.1016/j.jpba.2007.04.001.

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18

Hodek, Ondřej, John Henderson, Lidia Argemi-Muntadas, Adnan Khan, and Thomas Moritz. "Structural elucidation of 3-nitrophenylhydrazine derivatives of tricarboxylic acid cycle acids and optimization of their fragmentation to boost sensitivity in liquid chromatography-mass spectrometry." Journal of Chromatography B 1222 (April 2023): 123719. http://dx.doi.org/10.1016/j.jchromb.2023.123719.

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19

Ueyanagi, Yasushi, Daiki Setoyama, Daisuke Kawakami, et al. "Fully Automated Quantitative Measurement of Serum Organic Acids via LC-MS/MS for the Diagnosis of Organic Acidemias: Establishment of an Automation System and a Proof-of-Concept Validation." Diagnostics 11, no. 12 (2021): 2195. http://dx.doi.org/10.3390/diagnostics11122195.

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Gas chromatography-mass spectrometry has been widely used to analyze hundreds of organic acids in urine to provide a diagnostic basis for organic acidemia. However, it is difficult to operate in clinical laboratories on a daily basis due to sample pretreatment processing. Therefore, we aimed to develop a fully automated system for quantifying serum organic acids using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The pretreatment CLAM-2030 device was connected to an LC-MS/MS system for processing serum under optimized conditions, which included derivatizing serum organic acids usi

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20

NOJIMA, Kazuhiro, Masaru NIITSU, Yuuji KUROSAWA, Takuya IZAWA, Koji NAKAYAMA, and Hisaaki ITOH. "Facile and Accurate Analysis of Sodium Dehydroacetate in Cosmetic Powders After Extraction by Na₂CO₃-Methanol-H₂O and Derivatization with 4-Nitrophenylhydrazine∙HCl." CHROMATOGRAPHY 38, no. 2 (2017): 73–77. http://dx.doi.org/10.15583/jpchrom.2017.006.

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21

Yang, Yun, Shu-Lin Ma, Lan-Li Lu, and Xiao-Qing Yang. "(E)-1-(5-Bromo-2-ethoxy-3-methoxybenzylidene)-2-(2,4-dinitrophenyl)hydrazine dimethylformamide solvate." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): o3064—o3066. http://dx.doi.org/10.1107/s1600536806023737.

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In the title compound, C16H15BrN4O6·C3H7NO, the substituted vanillin group makes a dihedral angle of 7.58 (10)° with the nitrophenylhydrazine mean plane. A bifurcated intra/intermolecular N—H...(O,O) hydrogen bond and two C—H...O interactions help to establish the molecular conformation and consolidate the crystal packing.

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22

Kirandeep, Ahmad Husain, Pooja Negi, Girijesh Kumar, and Ramesh Kataria. "Crystal structure of (E)-4-hydroxy-6-methyl-3-{1-[2-(4-nitrophenyl)hydrazinylidene]ethyl}-2H-pyran-2-one." Acta Crystallographica Section E Crystallographic Communications 73, no. 2 (2017): 223–26. http://dx.doi.org/10.1107/s2056989017000639.

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The title compound, C14H13N3O5(HMNP), was synthesized by the simple condensation ofp-nitrophenylhydrazine with dehydroacetic acid (DHA) in a 1:1 molar ratio in ethanol. HMNP has been characterized by using FT–IR,1H and13C NMR and UV–Vis spectroscopic and single-crystal X-ray diffraction techniques. The crystal packing reveals strong hydrogen bonds between the NH group and the carbonyl O atom of dihydropyranone moiety, forming chains along [101]. The thermal stability of the synthesized compound was confirmed by thermogravimetric analysis and it was found to be stable up to 513 K. The UV–Vis sp

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23

Przespolewski, Amanda C., Spencer Rosario, Hua-Hsin Hsiao, et al. "Newly Diagnosed AML Exhibits Significant Differences in Immune Metabolic Pathways and Inflammatory States in Contrast to Patients with Relapsed/Refractory Disease." Blood 142, Supplement 1 (2023): 6015. http://dx.doi.org/10.1182/blood-2023-188980.

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Background: Acute myeloid leukemia (AML) is an aggressive hematological malignancy arising from an immature myeloid progenitor with notoriously poor outcomes. It has been established that the immune microenvironment has a significant impact on prognosis and has been targeted with therapy in other cancers. However, the immune microenvironment has yet to be fully characterized in AML, including changes as the disease progresses. This knowledge is critical for the development of immune based therapies for this disease since the patient's inflammatory and metabolic states may lead to failure of im

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24

Min, Zhenghu, Xingdan Wang, Xiaoqiu Yang, Qiwei Zhang, and Qi Zheng. "Analysis of O-Glycans by Oxidative Release Combined with 3-Nitrophenylhydrazine Derivatization." ACS Omega, April 3, 2025. https://doi.org/10.1021/acsomega.5c00652.

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25

Eichhorn, Thomas, Marko Đošić, Dušan Dimić, et al. "Ru(II)‐Nitrophenylhydrazine/Chlorophenylhydrazine Complexes: Nanoarchitectonics, Biological Evaluation and In silico Study." European Journal of Inorganic Chemistry, March 21, 2024. http://dx.doi.org/10.1002/ejic.202300683.

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Ru(II)‐arene compounds are being investigated as anticancer agents due to the biocompatibility of ruthenium and their structural diversity. Two newly synthesized Ru(II) complexes, [RuCl(η6‐p‐cymene)(3‐DNPH)] chlorido(η6‐p‐cymene)(k²‐N,N'‐3‐nitrophenylhydrazine) (1) and [RuCl(η6‐p‐cymene)(3‐CNPH)] chlorido(k²‐N,N'‐3‐chlorophenylhydrazine)(η6‐p‐cymene) (2), are experimentally (IR, NMR) and theoretically (B3LYP/6‐31+G(d,p)(H,C,N,Cl)/LanL2DZ(Ru)) characterized. Experimental and theoretical values of 1H and 13C chemical shifts and position of the most intense vibrational bands showed high correlati

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26

Zhao, Chenhao, Xingdan Wang, Jing Wu, Yeli Hu, Qiwei Zhang, and Qi Zheng. "Analysis of O-acetylated sialic acids by 3-nitrophenylhydrazine derivatization combined with LC-MS/MS." Analytical Methods, 2024. http://dx.doi.org/10.1039/d4ay00330f.

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27

Kranjc, Krištof, and Jernej Ekar. "Synthesis of Hydrazinylpyridines via Nucleophilic Aromatic Substitution and Further Transformation to Bicyclo[2.2.2]octenes Fused with Two N-Aminosuccinimide Moieties." Synthesis, October 12, 2020. http://dx.doi.org/10.1055/s-0040-1706481.

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AbstractEfficient and reliable synthesis of substituted hydrazinylpyridines in thick-wall ACE tubes via nucleophilic substitution of a chlorine substituent in different chloropyridines is presented. Hydrazine hydrate and alkylhydrazines were used as nucleophiles and simple alcohols and diethyl ether were the only organic solvents necessary, making the process environmentally and user friendly, potentially reaching 100% atomic efficiency. In the next step, transformations of succinic anhydride moieties fused to the bicyclo[2.2.2]octene framework into succinimide moieties via nucleophilic substi

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28

Hu, Wendie, Bing Liu, and Yao Wen. "Optimization of Ultrasound‐Assisted Deep Eutectic Solvent Extraction and Bioactivities of Polysaccharide from Porphyra haitanensis." Starch - Stärke, April 21, 2024. http://dx.doi.org/10.1002/star.202300272.

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AbstractIn this paper, ultrasound‐assisted method and deep eutectic solvent (DES) are used to extract polysaccharides from Porphyra haitanensis. The single‐factor experiment is carried out first, and then the response surface experiment is designed to obtain the optimal process conditions. The optimal extraction conditions are the molar ratio of choline chloride to oxalate of 1:1, the water content of DES of 60%, the solid–liquid ratio of 1:60 g mL−1, the time of 120 min, the power of 200 W, and the temperature of 80 °C, with the extraction yield of 4.42%. And the yield of P. haitanensis polys

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Osinaga, Faith O., Kenneth Blakeslee, Madan K. Kharel, Yan Waguespack, and Victor Hsia. "Method Validation of Gamma-Hydroxybutyrate Detection upon Herpes Simplex Virus-Type 1 Infection using LC-MRM-MS with 3-Nitrophenylhydrazine Derivatization." SSRN Electronic Journal, 2021. http://dx.doi.org/10.2139/ssrn.3954274.

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Schwartz-Zimmermann, Heidi E., Manuel Hündler, Nicole Reiterer, et al. "Comparison of LC-MS-based methods for the determination of carboxylic acids in animal matrices." Analytical and Bioanalytical Chemistry, January 5, 2024. http://dx.doi.org/10.1007/s00216-023-05113-8.

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AbstractCarboxylic acids (CAs) are key players in human and animal metabolism. As they are hardly retained under reversed-phase liquid chromatography (RP-LC) conditions in their native form, derivatization is an option to make them accessible to RP-LC and simultaneously increase their response for mass spectrometric detection. In this work, two RP-LC tandem mass spectrometry-based methods using aniline or 3-nitrophenylhydrazine (3-NPH) as derivatization agents were compared with respect to several factors including completeness of derivatization, apparent recoveries (RAs) in both cow feces and

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31

Xiang, Li, Yi Ru, Jingchun Shi, et al. "Derivatization of N-Acyl Glycines by 3-Nitrophenylhydrazine for Targeted Metabolomics Analysis and Their Application to the Study of Diabetes Progression in Mice." Analytical Chemistry, January 19, 2023. http://dx.doi.org/10.1021/acs.analchem.2c02507.

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Valdivia-Garcia, Maria, Katie Chappell, Stephane Camuzeaux, et al. "Improved Quantitation of Short-Chain Carboxylic Acids in Human Biofluids Using 3-Nitrophenylhydrazine Derivatization and Liquid Chromatography with Tandem Mass Spectrometry (LC-MS/MS)." SSRN Electronic Journal, 2022. http://dx.doi.org/10.2139/ssrn.4163686.

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33

Valdivia-Garcia, Maria A., Katie Chappell, Stephane Camuzeaux, et al. "Improved quantitation of short-chain carboxylic acids in human biofluids using 3-nitrophenylhydrazine derivatization and liquid chromatography with tandem mass spectrometry (LC-MS/MS)." Journal of Pharmaceutical and Biomedical Analysis, September 2022, 115060. http://dx.doi.org/10.1016/j.jpba.2022.115060.

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Hodek, Ondřej, John Henderson, Lidia Argemi-Muntadas, Adnan Kahn, and Thomas Moritz. "Structural Elucidation of 3-Nitrophenylhydrazine Derivatives of Tricarboxylic Acid Cycle Acids and Optimization of Their Fragmentation to Boost Sensitivity in Liquid Chromatography-Mass Spectrometry." SSRN Electronic Journal, 2023. http://dx.doi.org/10.2139/ssrn.4373974.

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Nagano, Erika, Kazuki Odake, and Shuichi Shimma. "Tissue derivatization for visualizing lactate and pyruvate in mouse testis tissues using matrix-assisted laser desorption/ionization-mass spectrometry imaging." Analytical and Bioanalytical Chemistry, October 8, 2024. http://dx.doi.org/10.1007/s00216-024-05559-4.

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AbstractPyruvate and lactate are the final metabolites of the glycolytic system that are formed under oxygen-rich and anaerobic conditions, respectively. They play an important role in energy metabolism. Obtaining a tissue distribution image of pyruvate and lactate holds great significance in molecular biology because the glycolytic system plays an essential role in diseases, such as tumors and diabetes; microbial activities, such as alcohol production and lactic acid fermentation; and maintaining homeostasis in the gut environment. However, it is difficult to obtain images of the distribution

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36

Nagatomo, Ryosuke, Aoi Ichikawa, Haruki Kaneko, and Koichi Inoue. "Comparison of 3-nitrophenylhydrazine, O-benzyl hydroxylamine, and 2-picolylamine derivatizations for analysis of short-chain fatty acids through liquid chromatography coupled with tandem mass spectrometry." Analytical Sciences, December 19, 2023. http://dx.doi.org/10.1007/s44211-023-00474-7.

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37

Nilesh, Mhaske, and Mane Vitthal. "Simultaneous Estimation of Short Chain Fatty Acids by LC-MS/MS Detection Technique." June 7, 2025. https://doi.org/10.5281/zenodo.14592445.

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Pre-analytical derivatization with 3-nitrophenylhydrazine (3NPH) was used to convert for quantitative and qualitative analysis of short-chain fatty acids (SCFAs) produced by the anaerobic gut microbiota in the large bowel. Understanding the interactions between nutrition, gut microbiota, and host metabolism balance requires both qualitative and quantitative assessments of SCFAs in the intestinal tract and feces. Chemical derivatization is a method for quantifying short-chain fatty acids that employs multiplereaction monitoring (MRM) and quantum ion electrospray ionization on LC-MS/MS API 3000.

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Moran, A., M. W. Mullowney, K. J. Yeo, E. G. Pamer, and A. M. Sidebottom. "B-177 Development of a Contrived Fecal Matrix for Clinical Validation of a LC-MS/MS Assay to Quantify Microbiota-derived Metabolites in Stool Specimens." Clinical Chemistry 70, Supplement_1 (2024). http://dx.doi.org/10.1093/clinchem/hvae106.537.

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Abstract Background The gut microbiota plays a critical role in health and its disruption can impact clinical outcomes in a variety of circumstances, including graft-versus-host disease following hematopoietic stem cell transplantation, Clostridioides difficile infections, and liver disease. Metagenomic and metabolomic analyses of fecal material is frequently performed in the research setting; however, evaluation of the gut microbiota is not yet incorporated into routine patient care. One barrier to its implementation is the lack of matrix-appropriate materials for validation of clinical assay

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Bösl, Markus, and Thomas F. Hofmann. "Quantitative Hochdurchsatzanalyse von Schlüsselgeruchstoffen in Lebensmitteln mittels UHPLC‐MS/MS." Lebensmittelchemie 78, S2 (2024). http://dx.doi.org/10.1002/lemi.202452245.

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AbstractDie Analyse von Aromastoffen mittels Flüssigchromatographie (LC) anstelle der Gaschromatographie (GC) ermöglicht die simultane Analyse von Aromastoffen und Geschmacksstoffen auf einer einzigen Analyseplattform. Durch die schnelle Probenvorbereitung und kurzen Messzeiten können Proben dabei im Hochdurchsatz analysiert werden. Wegen der hohen Flüchtigkeit und schlechten Ionisierbarkeit bei der „Electrospray Ionization” (ESI) werden die Aromastoffe vor der Analyse mittels Flüssigchromatographie‐Tandem‐Massenspektrometrie (LC‐MS/MS) einer Derivatisierung unterzogen. Für die Analyse von Aro

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