title: N-methylated tetraphenylporphins.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D010636:Phenols / Q000032:analysis; D011166:Porphyrins
chemical_list: D010636:Phenols; D011166:Porphyrins