159911-27-0 4a,7a-Dihydro-6,7a-di(p-fluorophenyl)spiro(cyclopentane-1,3'-(7H)cyclopenta-1,2,4-trioxin) 6',7'a-Bis(4-fluorophenyl)-4'a,7'a-dihydrospiro(cyclopentane-1,3'-(7H)cyclopenta(1,2,4)trioxin) cis- Fenozan 50F Fenozan-50F Spiro(cyclopentane-1,3'-(7H)cyclopenta(1,2,4)trioxin), 6',7'a-bis(4-fluorophenyl)-4'a,7'a-dihydro-, cis-