3817760 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3817760 > 2 > ChemIDplus > 156198968 > (5)Azch 156198-96-8 21H,23H-5-Azaporphine-13,17-dipropanoic acid, 7-ethenyl-2,3-dihydro-3-hydroxy-3,8,12,18-tetramethyl-2-(oxoethylidene)-, dimethyl ester, (R-(E))- 3-Ethenyl-2,7,12,18-tetramethyl-8-(2-oxoethylidene)-21H,23H-porphine-13,17-dipropanoic acid > 156198-96-8 > 156198968 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=156198968 $$$$