1-Bromo-3-methoxy-4-(1-piperidinylmethyl)-9H-fluoren-9-one 42839-74-7 5-20-02-00415 (Beilstein Handbook Reference) 9H-Fluoren-9-one, 1-bromo-3-methoxy-4-(1-piperidinylmethyl)- BRN 1262067