A simple qualitative test to distinguish between protoporphyrin IX or its esters and porphyrins containing no vinyl group.
D004952:Esters; D006801:Humans; D011166:Porphyrins; D011524:Protoporphyrins
D004952:Esters; D011166:Porphyrins; D011524:Protoporphyrins; C028025:protoporphyrin IX
PORPHYRIN