Synonyms: 21H-Biline-8,12-dipropanoicacid,2,17-diethenyl-1,10,19,22,23,24-hexahydro-3,7,13,18-tetramethyl-1,19-dioxo-,dimethyl ester (9CI); Biline-8,12-dipropionic acid,1,10,19,22,23,24-hexahydro-2,7,13,17-tetramethyl-1,19-dioxo-3,18-divinyl-,dimethyl ester (8CI); Bilirubin dimethyl ester (6CI); Bilirubin IXa dimethyl ester