Term Name:	protoporphyrin(2-)
Synonyms:	7,12-diethenyl-3,8,13,17-tetramethylporphyrin-2,18-dipropanoate, protoporphyrin IX
Definition:	The dicarboxylate anion of protoporphyrin, obtained by deprotonation of both carboxy groups.
Ontology:	ChEBI [CHEBI:57306]  ( EBI )