Year-end Sale % OFF 
Abstract
The structures of some azopigments obtained by diazotization of conjugated and unconjugated bile pigments with diazotized ethyl anthranilate were studied by mass spectrometry. The alpha(0)-azopigments derived from rat bile and human bile were shown to be identical (t.l.c. and mass spectra) with azobilirubin derived from unconjugated bilirubin. The presence of two methyl vinyl isomers (Ia) and (Ib) in equal amounts was shown by t.l.c. and mass spectrometry. The structure of the delta-azopigment derived from rat bile was studied by two methods: (a) ammonolysis gave rise to an amide having a CH(2).CH(2).CO.NH(2) side chain as shown by its mass spectrum; (b) the mass spectrum of a trimethylsilyl derivative of the delta-azopigment methyl ester confirmed the ester to be a beta-d-monoglucuronide ester of azobilirubin I.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
