3H-Pyrido(3,4-b)indol-7-ol, 4,9-dihydro-1-methyl- (8CI)(9CI) 4,9-Dihydro-1-methyl-3H-pyrido(3,4-b)indol-7-ol 525-57-5 6028-07-5 EINECS 208-375-4 Harmalol Harmidol Harmolol NSC 72293