Academic literature on the topic '5-dihydroxybenzoic acid'

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Journal articles on the topic "5-dihydroxybenzoic acid"

1

Sangkanu, Suthinee, Wanlapa Nuankaew, Thanet Pitakbut, and Sukanya Dej-adisai. "Phytochemical Investigation and Biological Activities of Desmodium heterocarpon Extract as Anti-Tyrosinase: Isolation of Natural Compounds, In Vitro and In Silico Study." Life 14, no. 11 (2024): 1400. http://dx.doi.org/10.3390/life14111400.

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Tyrosinase is an important enzyme in the biosynthesis of melanin. Many skin-whitening agents that inhibit tyrosinase activity from natural sources have been identified because they are harmless and non-toxic. In this work, 114 samples of 54 Fabaceae plants were assessed for their anti-tyrosinase activity using a dopachrome method. The results found that Desmodium heterocarpon stems and roots demonstrated the highest tyrosinase inhibitory activity at 20 µg/mL (92.50 ± 1.09%), whereas the water extract of Artocarpus lacucha and kojic acid demonstrated 87.41 ± 0.61% and 95.71 ± 0.33%, respectivel
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2

Vikas, V. Vaidya Manjiri A.Shinde* Pushkar M. Pradhan. "SEPARATION AND QUANTIFICATION OF PHARMACOLOGICALLY ACTIVE MARKERS p-METHOXY BENZOIC ACID, 3, 4-DIHYDROXYBENZOIC ACID AND GALLIC ACID FROM CAPPARIS SPINOSA AND FROM MARKETED FORMULATION BY HPTLC." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 02 (2018): 1226–32. https://doi.org/10.5281/zenodo.1190298.

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A simple, accurate, precise and reproducible High Performance Thin Layer Chromatographic (HPTLC) method for simultaneous quantification of p-methoxybenzoic acid, 3, 4-dihydroxybenzoic acid and Gallic acid in the leaf extract of Capparis spinosa was developed. Chromatography was performed on silica gel 60 F254 pre-coated HPTLC plates with double development using two solvent systems. Using first solvent system, Chloroform: Ethyl acetate: Formic acid: Glacial acetic acid 7.5 : 2 : 0.5 : 0.5 (v/v/v/v) the plate was developed till 80 mm while the second development was carried out till 85 mm using
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3

Ayer, William A., Lois M. Browne, Meow-Chen Feng, Helena Orszanska, and Hussein Saeedi-Ghomi. "The chemistry of the blue stain fungi. Part 1. Some metabolites of Ceratocystis species associated with mountain pine beetle infected lodgepole pine." Canadian Journal of Chemistry 64, no. 5 (1986): 904–9. http://dx.doi.org/10.1139/v86-149.

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Metabolites formed in still culture by Ceratocystisclavigera, C. ips, and C. huntii, three of the four Ceratocystis species associated with the blue stain disease of pine, have been identified. In addition to the ubiquitous fungal metabolites ergosterol, ergosterol peroxide, and fatty acids we have isolated succinic acid, β-phenethyl alcohol (1), tryptophol (2), prolylleucyl anhydride (3), tyrosol (4), 3-phenylpropane-1,2-diol (5), 6,8-dihydroxy-3-methylisocoumarin (8), 6,8-dihydroxy-3-hydroxymethylisocoumarin (9), p-hydroxybenzaldehyde (10), phenylacetic acid (11), p-hydroxyphenylacetic acid
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4

Kumarathasan, Prem, Renaud Vincent, Patrick Goegan, Marc Potvin, and Josée Guénette. "Hydroxyl radical adduct of 5-aminosalicylic acid: A potential marker of ozone-induced oxidative stress." Biochemistry and Cell Biology 79, no. 1 (2001): 33–42. http://dx.doi.org/10.1139/o00-091.

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The use of 5-aminosalicylic acid in assessment of reactive oxygen species formation was investigated by in vitro Fenton and ozonation reactions, and by in vivo ozone-exposure experiments. Enzymatic hydroxylation was evaluated by a microsomal assay. Fischer 344 male rats (250 g) injected with 5-aminosalicylic acid (100 mg·kg-1 i.p.; 30 min) were exposed to ozone (0, 1, 2 ppm; nose only, 2 h); bronchoalveolar lavage, lung homogenates, and plasma were recovered. Oxidation products of 5-aminosalicylic acid were as follows: salicylic acid, by deamination; 2,3-dihydroxybenzoic acid and 2,5-dihydroxy
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5

Dandela, Rambabu, Srinu Tothadi, Udaya Kiran Marelli, and Ashwini Nangia. "Systematic synthesis of a 6-component organic-salt alloy of naftopidil, and pentanary, quaternary and ternary multicomponent crystals." IUCrJ 5, no. 6 (2018): 816–22. http://dx.doi.org/10.1107/s2052252518014057.

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The single-crystal X-ray structure of a 6-component organic-salt alloy (hexanary) of naftopidil (1) (an active pharmaceutical ingredient) with benzoic acid (2) and four different hydroxy-substituted benzoic acids, i.e. salicylic acid (3), 2,3-dihydroxybenzoic acid (4), 2,4-dihydroxybenzoic acid (5) and 2,6-dihydroxybenzoic acid (6), is reported. The hexanary assembly originates from the observation that the binary salts of naftopidil with the above acids are isostructural. In addition to the 6-component solid, we also describe five 5-component, ten 4-component, and ten 3-component organic-salt
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6

Akita, Masaharu, Atsushi Yokoyama, and Hitoshi Kontani. "Teratogenicity of salicylate and its metabolites (2, 4-Dihydroxybenzoic acid and 2, 5-Dihydroxybenzoic acid) studied in the rat embryo culture method." Japanese Journal of Pharmacology 79 (1999): 295. http://dx.doi.org/10.1016/s0021-5198(19)35195-9.

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7

Yang, Ai Mei, Yun Men, Han Han, et al. "Chemical Constituents from Gentiana algida Pall." Advanced Materials Research 881-883 (January 2014): 419–22. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.419.

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Eight compounds were isolated from the ethanol extract of G. algida Pall. the structure of these compounds were identified as: oleic acid (1), linoleic acid (2), octacosanoic acid (3), β-sitosterol (4), 2,3-dihydroxybenzoic acid ethyl ester (5), n-butyl isobutyl phthalate (6), daucosterol (7), 5,8-dimethoxy furocoumarin (8). These structures were identified by NMR MS IR and other spectroscopic techniques. These compounds were isolated from this plant for the first time.
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8

M., Jude Jenita, Antony Muthu Prabhu A. та Rajendiran N. "Encapsulation of 3,5-dihydroxybenzoic acid and 3,4,5-trihydroxybenzoic acid by α- and β -cyclodextrins : Spectral and theoretical studies". Journal of Indian Chemical Society Vol. 91, Sep 2014 (2014): 1711–30. https://doi.org/10.5281/zenodo.5733117.

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Department of Chemistry, Annamalai University, Annamalainagar-608 002, Tamilnadu, India <em>E-mail</em> : drrajendiran@rediffmail.com <em>Manuscript received online 22 February 2014, accepted 06 April 2014</em> Inclusion complex formation of &alpha;-CD, &beta;-CD, hydroxy propyl-&alpha;-CD (Hp-&alpha;-CD) and hydroxy propyl-&beta;-CD (Hp-&beta;-CD) of 3,5-dihydroxybenzoic acid (DHBA) and 3,4,5-trihydroxybenzoic acid (THBA) were investigated. The inclusion complexes of both guest molecules with the four CDs were analysed by UV-Visible, steady state and time resolved fluorescence, FTIR, <sup>1</
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9

Smith, C. J., J. A. E. Gibson, and W. J. Bond. "Evaluating the potential of inorganic and organic ligands to extract aluminium from an acidic soil using batch and leaching cells." Soil Research 35, no. 3 (1997): 539. http://dx.doi.org/10.1071/s96024.

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Batch and leaching cell approaches were used to study the effect of a range of inorganic and organic ligands on the distribution of aluminium (Al) between the exchangeable and solution phase and to assess the ability of the ligands to mobilise aluminium in an acidic red earth (Calcic Rhodoxeralf). Anions were chosen to represent a range of potential abilities to form complexes with Al. They included chloride, fluoride, citrate, salicylate, 2,3-dihydroxybenzoic acid, catechol, and 2 different coal-derived fulvates. Batch experiments, using a 1 : 5 soil : solution ratio, showed that citrate, 2,3
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10

Anwar, Muhammad Aijaz, Nighat Afzaa, Sadia Ferheen, et al. "Nematicidal Potential of the Galinsoga parviflora." Biological Sciences - PJSIR 54, no. 2 (2011): 83–87. http://dx.doi.org/10.52763/pjsir.biol.sci.54.2.2011.83.87.

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Seven pure compounds of the Galinsoga parviflora: �-sitosterol (1); octacosanoic acid (2); ursolic acid (3); 4-hydroxybenzoic acid (4); 3,4-dihydroxybenzoic acid (5); gallic acid (6); �-sitosterol' 3-0-, �-D glucopyranoside (7) and the plant crude extract fractions were assayed in the laboratory for their nematicidal properties against plant parasitic nematodes Meloidogyne incognita (root-knot) and Cephalobus litoralis in different concentrations after 24 and 48 h. It was observed that crude extract, hexane, chloroform, ethyl acetate, methanol fractions and compounds no 1, 3, 4, and 7 showed s
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