3-Hydroxyamino-1-methyl-5H-pyrido(4,3-b)indole 74317-45-6 BRN 5537473 Hydroxy-TRP-P-2 Hydroxylamine, N-(1-methyl-5H-pyrido(4,3-b)indol-3-yl)- Trp-P-2 N-hydroxylated derivative