1,1'-(9H-Fluorene-2,7-diyl)bis(4-piperidinobutan-1-one) 1-Butanone, 1,1'-(9H-fluorene-2,7-diyl)bis(4-(1-piperidinyl)- 34927-63-4 34927-64-5 EINECS 252-294-7 Rmi 10233