163894-01-7 3(8-,13 or 17)-(carboxyhydroxymethyl)-8,13,17(3,13,17-,3,8,17 or 3,8,13)-tris(carboxymethyl)-21H,23H-Porphine-2,7,12,18-tetrapropanoic acid
16391-75-6 (4alpha,8alpha,9beta,13alpha,14beta,17Z)-16beta-acetoxy-3alpha,11alpha-dihydroxy-29-nordammara-17(20),24-dien-21-oic acid, compound with 2,2'-iminodiethanol (1:1)