Detail of "313657-94-2"

Reference

Identification of BVT

Identification of BVT.2938 metabolites by LC/MS and LC/MS/MS after in vitro incubations with liver microsomes and hepatocytes. Edlund, Per Olof; Baranczewski, Pawel (Preclinical R&D, Biovitrum AB, Stockholm SE-112 76, Swed.). Journal of Pharmaceutical and Biomedical Analysis, 34(5), 1079-1090 (English) 2004 Elsevier Science B.V. CODEN: JPBADA. ISSN: 0731-7085. DOCUMENT TYPE: Journal CA Section: 1 (Pharmacology) The metab. of the 5HT2c agonist BVT.2938, 1-(3-{2-[(2-ethoxy-3-pyridinyl)oxy]ethoxy}-2-pyrazinyl)-2(R)-methylpipera zine, was studied in vitro by incubation with rat, monkey and human liver microsomes as well as cryopreserved hepatocytes, followed by liq. chromatog./mass spectrometry (LC/MS) and LC/MS/MS anal. on a quadrupole-time of flight mass spectrometer for structural elucidation. Deuterium exchange on column was used to differentiate between hydroxylation and N-oxidn. Liver microsomes were incubated in two different buffer systems with optimum conditions for cytochrome P 450 activity or UDP-glucuronosyltransferase activity. The major phase I metabolites of BVT.2938 originated from O-deethylation of the pyridine ring, O-dealkylation of the ethylene bridge, pyrazine ring hydroxylation, hydroxylation of pyridine ring and piperazine ring N-hydroxylation. 313657-94-2 is the cas registry number of certain chemical which is used as reagents here. When a hydrogen carbonate buffer system was supplemented with UDPGA, the piperazine carbamoyl-glucuronide from the parent compd. was identified together with several glucuronides of the phase I metabolites. The metabolite pattern in hepatocytes was similar to microsomes except that the sulfate at the N-position of the piperazine ring of BVT.2938 was identified, while the carbamoyl-glucuronide was missing. Excellent correlation was obtained between radioactivity detection and the chemiluminescent nitrogen detector when the nitrogen content of the analytes was taken into account. .