On the chromophores of porphyrin systems.
D002734:Chlorophyll; D003300:Copper; D008968:Molecular Conformation; D009942:Organometallic Compounds; D010636:Phenols; D011166:Porphyrins; D011725:Pyridines; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D013329:Structure-Activity Relationship
D009942:Organometallic Compounds; D010636:Phenols; D011166:Porphyrins; D011725:Pyridines; D002734:Chlorophyll; D003300:Copper