3,5-Dihydro-8-(phenylmethoxy)-4H-pyridazino(4,5-b)indol-4-one hydrazone 4-Hydrazino-8-benzyloxy-5H-pyridazino(4,5-b)indole 4H-Pyridazino(4,5-b)indol-4-one, 3,5-dihydro-8-(phenylmethoxy)-, hydrazone 84576-41-0 BRN 6070205