3769509 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3769509 > 2 > ChemIDplus > 075675524 > 21H,23H-Porphine-2,18-dipropanoic acid, 7,12-diethenyl-3,8,13,17,21(or 3,8,13,17,23)-pentamethyl-, dimethyl ester 75675-52-4 Mppdme N-Methylprotoporphyrin dimethyl ester > 75675-52-4 > 075675524 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=075675524 $$$$