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Journal articles on the topic 'Separation of ionogenic compounds'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Stoll, Dwight R., Kelly O’Neill, and David C. Harmes. "Effects of pH mismatch between the two dimensions of reversed-phase×reversed-phase two-dimensional separations on second dimension separation quality for ionogenic compounds—I. Carboxylic acids." Journal of Chromatography A 1383 (February 2015): 25–34. http://dx.doi.org/10.1016/j.chroma.2014.12.054.

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2

Walendziak, Longin, and Janusz Jadczak. "Electrophoretic separation and thiomercurimetric monitoring of ionogenic thiols." Journal of Chromatography A 331 (January 1985): 193–99. http://dx.doi.org/10.1016/0021-9673(85)80022-4.

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3

Česnek, Michal, Milena Masojídková, Antonín Holý, Veronika Šolínová, Dušan Koval, and Václav Kašička. "Synthesis and Properties of 2-Guanidinopurines." Collection of Czechoslovak Chemical Communications 71, no. 9 (2006): 1303–19. http://dx.doi.org/10.1135/cccc20061303.

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2-Guanidinopurines were prepared as derivatives of 2,6-diamino-9-[2-(phosphonomethoxy)ethyl]-9H-purine (PMEDAP) (1), which shows an important antiviral activity. It completes earlier described synthesis of 6-guanidinopurine derivatives. The title compounds were obtained by the reaction of the corresponding 2-chloropurines with guanidine. 2- And 6-guanidinopurines were used as model compounds for determination of dissociation constants (pKa) of their ionogenic groups by capillary zone electrophoresis. The pKa values of ionogenic groups of the above compounds were compared with those of the corresponding aminopurines. The pKa of guanidino group at the purine moiety varies from 7.77 to 10.32. There is no protonation of N1-position in contrast to aminopurines. None of these compounds showed any antiviral activity.

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4

Levchenko, Yevhenii, Olga Sverdlikovska, Denys Chervakov, and Oleh Chervakov. "Development of coalescents for paints and varnishes based on ionic liquids – the products of diethanolamine and inorganic acids interaction." Eastern-European Journal of Enterprise Technologies 2, no. 6 (110) (April 12, 2021): 21–29. http://dx.doi.org/10.15587/1729-4061.2021.228546.

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This paper reports the synthesis of ionic liquids through the interaction between diethanolamine and orthophosphate and boric acids in order to establish the possibility of replacing volatile coalescents in a formulation for paints and varnishes with ionogenic compounds. The results from studying the influence of polymeric coalescents based on ionic liquids on the rheological properties of water-dispersion paints and varnishes of different nature are presented. It has been established that the synthesized coalescents could be used to modify the properties of paints and varnishes based on polyurethane and styrene-acrylic aqueous dispersions. It has been shown that the product of the interaction between diethanolamine and boric acid in aqueous solutions forms an ionogenic complex compound with a unipolar conductivity in terms of ОН─ ions. It was also established that when introduced to the formulation of water-dispersion paints and varnishes, the solutions of modifiers produce a diluting action. The influence of ionic liquids on the process of film formation of aqueous dispersions of polymers and pigmented paints and varnishes based on them was investigated. It was established that the synthesized ionogenic compounds are not inferior, in terms of their effectiveness, to the widespread conventional industrial coalescents of the Texanol→ type. Therefore, there is reason to assert the possibility of replacing the industrial coalescent Texanol→ in the formulation of pigmented water-dispersion paints and varnishes based on styrene-acrylic and polyurethane dispersions with fundamentally new synthesized ionogenic modifiers. Thus, the coatings with a coalescent based on ion liquid of diethanolamine borate have a higher level of conditional hardness, which exceeds by 17 % the hardness index of the paint made on the basis of the conventional Texanol→ type coalescent, without changing its decorative properties, such as color and shine

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5

Jafvert, Chad T., John C. Westall, Erwin Grieder, and Rene P. Schwarzenbach. "Distribution of hydrophobic ionogenic organic compounds between octanol and water: organic acids." Environmental Science & Technology 24, no. 12 (December 1990): 1795–803. http://dx.doi.org/10.1021/es00082a002.

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6

Janoš, Pavel, and Jiřı́ Škoda. "Reversed-phase high-performance liquid chromatography of ionogenic compounds: comparison of retention models." Journal of Chromatography A 859, no. 1 (October 1999): 1–12. http://dx.doi.org/10.1016/s0021-9673(99)00837-7.

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7

Demin, A. A., A. T. Melenevsky, and K. P. Papukova. "Effect of the concentration of ionogenic groups in the sorbent on the separation of protein mixtures." Journal of Chromatography A 1006, no. 1-2 (July 2003): 185–93. http://dx.doi.org/10.1016/s0021-9673(03)00952-x.

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8

Hutta, M., D. Kaniansky, E. Šimuničová, V. Zelenská, V. Madajová, and A. Šišková. "Solid phase extraction for sample preparation in trace analysis of ionogenic compounds by capillary isotachophoresis." Journal of Radioanalytical and Nuclear Chemistry Articles 163, no. 1 (November 1992): 87–98. http://dx.doi.org/10.1007/bf02037483.

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9

Zelenetskii, A. N., V. P. Volkov, N. Yu Artem'eva, and E. S. Obolonkova. "Effect of Association of Ionogenic Groups on the Phase Separation and Crystallisation and Formation of Supermolecular Structures." International Polymer Science and Technology 31, no. 1 (January 2004): 33–38. http://dx.doi.org/10.1177/0307174x0403100111.

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10

GASSMANN, E., J. E. KUO, and R. N. ZARE. "Electrokinetic Separation of Chiral Compounds." Science 230, no. 4727 (November 15, 1985): 813–14. http://dx.doi.org/10.1126/science.230.4727.813.

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11

Shal’nova, L. I., and N. A. Lavrov. "Ionogenic gel-forming (co)polymers of N-vinyl succinimide, N-vinylsuccinamic and acrylic acids grafted on starch." Plasticheskie massy, no. 7-8 (September 17, 2020): 8–11. http://dx.doi.org/10.35164/0554-2901-2020-7-8-8-11.

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Gel-forming (co)polymers of N-vinylsuccinimide, N-vinylsuccinamic and acrylic acids grafted on starch were obtained using an initiating redox system or as a result of 60Co gamma irradiation. The dependence of the level of sorption properties (co)of polymers relative to bioactive compounds (BAC), their water absorption and swelling on the conditions of the (co) polymerization process has been determined. The ability of composite copolymers to high moisture absorption, binding and prolonged release of BAC and the possibility of their use for biomedical purposes has been established.

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12

Paci, A., A. Rieutord, F. Brion, and P. Prognon. "Separation methods for alkylating antineoplastic compounds." Journal of Chromatography B: Biomedical Sciences and Applications 764, no. 1-2 (November 2001): 255–87. http://dx.doi.org/10.1016/s0378-4347(01)00280-8.

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13

Cha, K. W., S. I. Park, Y. K. Lee, and J. J. Yim. "Capillary Electrophoretic Separation of Pteridine Compounds." Pteridines 4, no. 4 (November 1993): 210–13. http://dx.doi.org/10.1515/pteridines.1993.4.4.210.

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14

Vasudevan, Dharni, Ellen M. Cooper, and Oliver L. Van Exem. "Sorption−Desorption of Ionogenic Compounds at the Mineral−Water Interface: Study of Metal Oxide-Rich Soils and Pure-Phase Minerals." Environmental Science & Technology 36, no. 3 (February 2002): 501–11. http://dx.doi.org/10.1021/es0109390.

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15

Suleimenov, Ibragim, Galym Mamytbekov, and Esen Bekturov. "Interrelation of Hierarchy of Structures at Comparison of Linear and Cross-linked Polymer Compounds." Eurasian Chemico-Technological Journal 3, no. 3 (July 5, 2017): 201. http://dx.doi.org/10.18321/ectj567.

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The comparison of behavior of a linear polymer compounds and cross-linked networks are carried out. It is shown, that the correspondence between rheological behavior of a linear polymer compound and macroscopic behavior of its cross-linked analog is determined by topology of structures describing a hydrogel as qualitatively new object as well as by the type of polymer – solvent interactions. In this situation swelling degree is completely described by the Katchalsky – Lifson’s theory. Moreover it is possible to predict microscopic behavior of macromolecular chains on the base of experimental studies of macroscopic specimens of the gel. Such investigations may be carried out in direct way for organogels. When the gel is charged (polyelectrolyte effect takes place) it is necessary to make some correction. The fact is due to so called effect of concentration redistribution, which occurs when surface of the gel acts as a membrane. In such situation the concentration of low-molecular salt inside gel may be quite more low then the concentration of the salt outside specimen. Thus in the solutions of ionogenic salts real behavior of the specimen is determined not average concentration of salt, but the real concentration of salt inside of the gel. Measuring this concentration experimentally it is possible to carried out investigations of charged macromolecular chains on the base of macroscopic specimens too.

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16

Kenari, Marziyeh E., Joshua I. Putman, Ravi P. Singh, Brandon B. Fulton, Huy Phan, Reem K. Haimour, Key Tse, Alain Berthod, Carl J. Lovely, and Daniel W. Armstrong. "Enantiomeric Separation of New Chiral Azole Compounds." Molecules 26, no. 1 (January 4, 2021): 213. http://dx.doi.org/10.3390/molecules26010213.

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Twelve new azole compounds were synthesized through an ene reaction involving methylidene heterocycles and phenylmaleimide, producing four oxazoles, five thiazoles, and one pyridine derivative, and ethyl glyoxylate for an oxazole and a thiazole compound. The twelve azoles have a stereogenic center in their structure. Hence, a method to separate the enantiomeric pairs, must be provided if any further study of chemical and pharmacological importance of these compounds is to be accomplished. Six chiral stationary phases were assayed: four were based on macrocyclic glycopeptide selectors and two on linear carbohydrates, i.e., derivatized maltodextrin and amylose. The enantiomers of the entire set of new chiral azole compounds were separated using three different mobile phase elution modes: normal phase, polar organic, and reversed phase. The most effective chiral stationary phase was the MaltoShell column, which was able to separate ten of the twelve compounds in one elution mode or another. Structural similarities in the newly synthesized oxazoles provided some insights into possible chiral recognition mechanisms.

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17

Kotia, Ruchi Bhatnagar, Lijuan Li, and Linda B. McGown. "Separation of Nontarget Compounds by DNA Aptamers." Analytical Chemistry 72, no. 4 (February 2000): 827–31. http://dx.doi.org/10.1021/ac991112f.

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18

Zufı́a, L., A. Aldaz, and J. Giráldez. "Separation methods for camptothecin and related compounds." Journal of Chromatography B: Biomedical Sciences and Applications 764, no. 1-2 (November 2001): 141–59. http://dx.doi.org/10.1016/s0378-4347(01)00319-x.

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19

Fujita, Megumi, Helen M. Mah, Paulo W. M. Sgarbi, Manjinder S. Lall, Tai Wei Ly, and Lois M. Browne. "Separation of Acids, Bases, and Neutral Compounds." Journal of Chemical Education 80, no. 1 (January 2003): 107. http://dx.doi.org/10.1021/ed080p107.

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20

Hanai, Toshihiko. "Separation of polar compounds using carbon columns." Journal of Chromatography A 989, no. 2 (March 2003): 183–96. http://dx.doi.org/10.1016/s0021-9673(02)02017-4.

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21

Jin, Yinzhe, Chun Hua Jin, and Kyung Ho Row. "Separation of catechin compounds from different teas." Biotechnology Journal 1, no. 2 (February 2006): 209–13. http://dx.doi.org/10.1002/biot.200500019.

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22

Verleysen, Katleen, and Pat Sandra. "Separation of chiral compounds by capillary electrophoresis." Electrophoresis 19, no. 16-17 (November 1998): 2798–833. http://dx.doi.org/10.1002/elps.1150191607.

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23

Watts, Simon F. "Separation and trapping of atmospheric sulphur compounds." Environmental Technology Letters 10, no. 8 (August 1989): 777–83. http://dx.doi.org/10.1080/09593338909384797.

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24

Götze, H. J., and P. Telgheder. "Chromatographic separation tetraalkyllead compounds by perfluoroheptane elution." Fresenius' Zeitschrift für analytische Chemie 320, no. 1 (January 1985): 59–60. http://dx.doi.org/10.1007/bf00481083.

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25

Hutta, M., J. Marák, and D. Kaniansky. "Some possibilities of combining high-performance liquid chromatography with isotachophoresis for the trace determination of ionogenic compounds present in complex matrices." Journal of Chromatography A 509, no. 1 (June 1990): 271–82. http://dx.doi.org/10.1016/s0021-9673(01)93263-7.

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26

Rotskaya, U. N., L. P. Ovchinnikova, E. A. Vasunina, O. I. Sinitsina, N. V. Kandalintseva, E. A. Prosenko, and G. A. Nevinsky. "Evaluation of cytotocicity and efficiency of antioxidant protection of hydrophilic derivatives of 2,4,6-trialkylphenols in Escherichia coli cells." Biomeditsinskaya Khimiya 57, no. 3 (2011): 326–34. http://dx.doi.org/10.18097/pbmc20115703326.

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The effects of five new derivatives of 2,6-dialkyl-4-propylphenole containing in para-radical different ionogenic groups (-SO3Na, -S-SO3Na, -S-(NH2)2Cl) in the presence and in the absence of hydrogen peroxide on the survival of E. coli AB1157 cells and its isogenic strain defective in repair enzyme genes were studied. Cell survival treated with hydrogen peroxide was remarkably increased in the presence of (3-(3,5-dimethyl-4-hydroxyphenyl)propyl)-1-sulphonate of sodium (С1). Replacement of methyl оrtho-radicals in the structure of С1 for tret-buthyl or cyclohexyl groups led to a decrease of the compounds ability to protect the cells from exogenic hydrogen peroxide. Between derivatives of 2,6-di-tret-buthylphenol the compound with thiosulphonate group demonstrated properties comparable with those for its sulphonate analog, then a chloride of isotiurone at concentration 3 mM completely suppressed the growth of cells in presence and in the absence of Н2О2. Compound C1 may be considered as most perspective for detail analysis as antioxidant.

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27

Šlejkovec, Zdenka, Johannes T. van Elteren, Anthony R. Byrne, and Jeroen J. M. de Goeij. "Separation of radiolabelled arsenic compounds produced by neutron irradiation of organoarsenic compounds." Analytica Chimica Acta 380, no. 1 (January 1999): 63–71. http://dx.doi.org/10.1016/s0003-2670(98)00709-0.

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28

Husien, Nemah Sahib Mohammed, Rajaa Abd Alameer Gafel, and Noor Dia Jaffer. "A Literature Review on the Separation of Chemical Compounds." American International Journal of Multidisciplinary Scientific Research 4, no. 1 (December 27, 2018): 22–31. http://dx.doi.org/10.46281/aijmsr.v4i1.225.

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This literature involved explanation about separation organic components in mixture such as(chromatography ,extraction ,filtration, centrifuge…) , principles of separation , methods of separation ,types of separation , purification of separated compounds , conditions of separation , physical and chemical properties of mixture.

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29

Rao, P. S. C. "Sorption of Organic Contaminants." Water Science and Technology 22, no. 6 (June 1, 1990): 1–6. http://dx.doi.org/10.2166/wst.1990.0044.

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Sorption of organic contaminants plays a dominant role in their rate of transport through porous media such as soils, sediments and aquifers. The rate of abiotic and biotic transformations may also be significantly altered by sorption. This paper presents a brief overview of the current knowledge base on sorption of organic contaminants by natural sorbents, and examines several emerging issues that need further study. Partitioning into sorbent organic matter is viewed as the predominant process for sorption of nonpolar organics from aqueous solutions, and various methods have been proposed for estimating sorption/partition coefficients. Recent experimental and theoretical work has established a basis for predicting organic contaminants sorption from polar mixed solvents (mixtures of water and miscible cosolvents). Data on sorption of ionic and ionogenic organic compounds (e.g., phenols, amines) are limited, and initial efforts are underway to develop models for such sorbates. There also has been a recent resurgence of interest in studying vapor-phase sorption and transport of volatile organic compounds. Much of the early work on sorption dealt with equilibrium sorption, but considerable advances have been made in characterizing and predicting sorption nonequilibrium as well. Molecular-scale measurements are needed in order to provide direct, unequivocal evidence for selection among several contending phenomenological models proposed for describing sorption equilibrium and kinetics.

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30

Watanabe, Kuniaki. "Alloys and Metallic Compounds for Hydrogen Isotope Separation." Materia Japan 34, no. 2 (1995): 173–78. http://dx.doi.org/10.2320/materia.34.173.

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31

Lee, Hye Ryeon, Masakoto Kanezashi, Tomohisa Yoshioka, and Toshinori Tsuru. "Preparation of hydrogen separation membranes using disiloxane compounds." Desalination and Water Treatment 17, no. 1-3 (May 2010): 120–26. http://dx.doi.org/10.5004/dwt.2010.1707.

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32

Zhu, Xiaoying, and Renbi Bai. "Separation of Biologically Active Compounds by Membrane Operations." Current Pharmaceutical Design 23, no. 2 (February 13, 2017): 218–30. http://dx.doi.org/10.2174/1381612822666161027153823.

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Background: Bioactive compounds from various natural sources have been attracting more and more attention, owing to their broad diversity of functionalities and availabilities. However, many of the bioactive compounds often exist at an extremely low concentration in a mixture so that massive harvesting is needed to obtain sufficient amounts for their practical usage. Thus, effective fractionation or separation technologies are essential for the screening and production of the bioactive compound products. The applicatons of conventional processes such as extraction, distillation and lyophilisation, etc. may be tedious, have high energy consumption or cause denature or degradation of the bioactive compounds. Membrane separation processes operate at ambient temperature, without the need for heating and therefore with less energy consumption. The “cold” separation technology also prevents the possible degradation of the bioactive compounds. The separation process is mainly physical and both fractions (permeate and retentate) of the membrane processes may be recovered. Thus, using membrane separation technology is a promising approach to concentrate and separate bioactive compounds. Methods: A comprehensive survey of membrane operations used for the separation of bioactive compounds is conducted. The available and established membrane separation processes are introduced and reviewed. Results: The most frequently used membrane processes are the pressure driven ones, including microfiltration (MF), ultrafiltration (UF) and nanofiltration (NF). They are applied either individually as a single sieve or in combination as an integrated membrane array to meet the different requirements in the separation of bioactive compounds. Other new membrane processes with multiple functions have also been developed and employed for the separation or fractionation of bioactive compounds. The hybrid electrodialysis (ED)-UF membrane process, for example has been used to provide a solution for the separation of biomolecules with similar molecular weights but different surface electrical properties. In contrast, the affinity membrane technology is shown to have the advantages of increasing the separation efficiency at low operational pressures through selectively adsorbing bioactive compounds during the filtration process. Conclusion: Individual membranes or membrane arrays are effectively used to separate bioactive compounds or achieve multiple fractionation of them with different molecule weights or sizes. Pressure driven membrane processes are highly efficient and widely used. Membrane fouling, especially irreversible organic and biological fouling, is the inevitable problem. Multifunctional membranes and affinity membranes provide the possibility of effectively separating bioactive compounds that are similar in sizes but different in other physical and chemical properties. Surface modification methods are of great potential to increase membrane separation efficiency as well as reduce the problem of membrane fouling. Developing membranes and optimizing the operational parameters specifically for the applications of separation of various bioactive compounds should be taken as an important part of ongoing or future membrane research in this field.

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33

Ubeda, Maria Angeles, and Roman Dembinski. "Fluorous Compounds and Their Role in Separation Chemistry." Journal of Chemical Education 83, no. 1 (January 2006): 84. http://dx.doi.org/10.1021/ed083p84.

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34

Ito, Takao, Norikazu Namiki, Lee, Hitoshi Emi, and Yoshio Otani. "Electrostatic Separation of Volatile Organic Compounds by Ionization." Environmental Science & Technology 36, no. 19 (October 2002): 4170–74. http://dx.doi.org/10.1021/es025505z.

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35

Loregian, Arianna, Rosalba Gatti, Giorgio Palù, and Elio F. De Palo. "Separation methods for acyclovir and related antiviral compounds." Journal of Chromatography B: Biomedical Sciences and Applications 764, no. 1-2 (November 2001): 289–311. http://dx.doi.org/10.1016/s0378-4347(01)00379-6.

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36

LIANG, Y., J. GUO, X. LIU, and R. WEI. "Chiral Separation of Spiro-compounds and Determination Configuration." Chemical Research in Chinese Universities 24, no. 4 (July 2008): 441–44. http://dx.doi.org/10.1016/s1005-9040(08)60092-6.

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37

Kawasaki, Junjiro, Hitoshi Kosuge, Hiroaki Habaki, and Yoshinobu Morita. "SEPARATION OF TAXANE COMPOUNDS BY LIQUID-LIQUID EXTRACTION." Chemical Engineering Communications 195, no. 6 (February 13, 2008): 644–60. http://dx.doi.org/10.1080/00986440701555456.

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38

Li, Xuenan, Qilong Ren, Qiwei Yang, Huabin Xing, Yi Zhang, and Wenbin Jin. "Separation of structurally-related compounds with ionic liquids." SCIENTIA SINICA Chimica 46, no. 12 (December 1, 2016): 1251–63. http://dx.doi.org/10.1360/n032016-00121.

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39

Vermeulen, Lori A., and Mark E. Thompson. "Stable photoinduced charge separation in layered viologen compounds." Nature 358, no. 6388 (August 1992): 656–58. http://dx.doi.org/10.1038/358656a0.

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40

Miki, Yasuo, Makoto Toba, and Yuji Yoshimura. "Separation of Sulfur Compounds in Straight-Run Naphtha." Bulletin of the Chemical Society of Japan 80, no. 11 (November 15, 2007): 2157–60. http://dx.doi.org/10.1246/bcsj.80.2157.

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41

Ibáñez, Elena, and Miguel Herrero. "Liquid phase extraction and separation of natural compounds." ELECTROPHORESIS 39, no. 15 (August 2018): 1833–34. http://dx.doi.org/10.1002/elps.201870124.

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42

Santos, João H. P. M., Mafalda R. Almeida, Cláudia I. R. Martins, Ana C. R. V. Dias, Mara G. Freire, João A. P. Coutinho, and Sónia P. M. Ventura. "Separation of phenolic compounds by centrifugal partition chromatography." Green Chemistry 20, no. 8 (2018): 1906–16. http://dx.doi.org/10.1039/c8gc00179k.

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43

Jean, G., M. Poirier, and H. Sawatzky. "Separation of Nitrogenous-Type Compounds from Synthetic Crudes." Separation Science and Technology 20, no. 7-8 (September 1985): 541–53. http://dx.doi.org/10.1080/01496398508068236.

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44

Vyoral, Daniel, Jirí Petrák, and Antonín Hradilek. "Separation of cellular iron containing compounds by electrophoresis." Biological Trace Element Research 61, no. 3 (March 1998): 263–75. http://dx.doi.org/10.1007/bf02789087.

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45

Vaňura, P., V. Jedináková-Křížová, and Z. Valentová. "Separation of Cs and Sr using polyoxonium compounds." Journal of Radioanalytical and Nuclear Chemistry Articles 208, no. 1 (August 1996): 283–94. http://dx.doi.org/10.1007/bf02039766.

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46

Lim, Jong-Tae, Richard N. Zare, Christopher G. Bailey, David J. Rakestraw, and Chao Yan. "Separation of related opiate compounds using capillary electrochromatography." Electrophoresis 21, no. 4 (March 1, 2000): 737–42. http://dx.doi.org/10.1002/(sici)1522-2683(20000301)21:4<737::aid-elps737>3.0.co;2-q.

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47

Lechuga-Islas, Victor D., Melisa Trejo-Maldonado, Steffi Stumpf, Ramiro Guerrero-Santos, Luis Elizalde-Herrera, Ulrich S. Schubert, and Carlos Guerrero-Sanchez. "Separation of volatile compounds from polymers by physisorption." European Polymer Journal 159 (October 2021): 110748. http://dx.doi.org/10.1016/j.eurpolymj.2021.110748.

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48

Zenkevich, Igor G., and Nikita E. Podol’skii. "Revealing compounds unstable during gas chromatographic separation. Non-substituted hydrazones of carbonyl compounds." Аналитика и контроль 21, no. 2 (2017): 125–34. http://dx.doi.org/10.15826/analitika.2017.21.2.002.

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49

Bell, Carl-Martin, Ivy Huang, Meijuan Zhou, Richard W. Baker, and J. G. Wijmans. "A Vapor Permeation Processes for the Separation of Aromatic Compounds from Aliphatic Compounds." Separation Science and Technology 49, no. 15 (September 30, 2014): 2271–79. http://dx.doi.org/10.1080/01496395.2014.928325.

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50

YAMAMOTO, Yoshitaka, Yoshiki SATO, Takeo EBINA, Chiaki YOKOYAMA, Shinji TAKAHASHI, and Nobuhiko NISHIGUCHI. "Separation of Heterocyclic Compounds by High Pressure Crystallization. (II). Separation from Quinoline-Isoquinoline system." Journal of the Japan Institute of Energy 72, no. 4 (1993): 263–71. http://dx.doi.org/10.3775/jie.72.263.

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