Myung, SW Huh, S Kim, M Park, J Yoo, JK Chae, JS Lee, JW 2024-01-21T18:07:45Z 2024-01-21T18:07:45Z 2021-09-04 1997-08-15 0378-4347 https://pubs.kist.re.kr/handle/201004/143646 YH439 is a potential drug candidate for the treatment of various hepatic disorders. YH439 and its three metabolites have been identified in rat urine by liquid chromatography-mass spectrometry (LC-MS) and by gas chromatography (GC)-MS. Identification of YH439 and its metabolites was established by comparing their GC retention times and mass spectra with those of the synthesized authentic standards, Both electron impact-and positive chemical ionization MS have been evaluated The metabolism study was performed in the rat using oral administration of the drug. A major metabolite (YH438) was identified as the N-dealkylation product of YH339. Other identified metabolites were caused by the loss of the methyl thiazolyl amine group (metabolite II) from YH439, the isopropyl hydrogen malonate group (metabolite TV) and the decarboxylated product (metabolite III) of metabolite II. (C) 1997 Elsevier Science B.V. English ELSEVIER SCIENCE BV MALOTILATE Identification of YH439 and its metabolites in rat urine by gas chromatography mass spectrometry and liquid chromatography mass spectrometry Article 10.1016/S0378-4347(97)00231-4 1 JOURNAL OF CHROMATOGRAPHY B, v.696, no.1, pp.160 - 165 JOURNAL OF CHROMATOGRAPHY B 696 1 160 165 scie scopus A1997XU89000020 2-s2.0-0030767908 Biochemical Research Methods Chemistry, Analytical Biochemistry & Molecular Biology Chemistry Article MALOTILATE YH439