133414-54-7 4,4a,5,6-Tetrahydro-9-methoxybenzo(h)cinnolin-3(2H)-one 9-Methoxy-4,4a,5,6-tetrahydrobenzo(h)cinnolin-3(2H)-one BRN 4258252 Benzo(h)cinnolin-3(2H)-one, 4,4a,5,6-tetrahydro-9-methoxy-