107688-09-5 3,5-Dihydro-8-methoxy-4H-pyridazino(4,5-b)indol-4-one hydrazone 4-Hydrazino-8-methoxy-5H-pyridazino(4,5-b)indole 4H-Pyridazino(4,5-b)indol-4-one, 3,5-dihydro-8-methoxy-, hydrazone BRN 6064844