biliverdin and bilirubin mono- and di-beta-glucuronides were prepared by nucleophilic substitution of the 1-o-mesyl derivative of alpha-ethoxyethyl-protected glucuronic acid ( compound ii ) with the tetrabutylammonium salts of biliverdin and bilirubin .
C0005446
biliverdin
C0005437
bilirubin