122955-18-4 5,5-Bis(4-pyridinylmethyl)-5H-cyclopenta(2,1-b-3,4-b')dipyridine 5H-Cyclopenta(2,1-b-3,4-b')dipyridine, 5,5-bis(4-pyridinylmethyl)- Exp 9121 X 9121 X-9121 X9121