Pyrido[3,4-c]psoralen and 7-methylpyrido[3,4-c]psoralen.
D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D011564:Furocoumarins / Q000009:adverse effects / Q000633:toxicity*; D006801:Humans; D051379:Mice; D009152:Mutagenicity Tests; D010789:Phototherapy; D011565:Psoriasis / Q000628:therapy
D011564:Furocoumarins; C044263:pyrido(3,4-c)psoralen; C044264:pyrido(3,4-c)-7-methylpsoralen