13350-71-5 13366-64-8 2,4,7-Metheno-1H-cyclopenta(a)pentalene, 1,1,2,3,3a,7a-hexachloro-2,3,3a,3b,4,6a,7,7a-octahydro-, (2R,3R,3aS,3bS,4S,6aR,7S,7aS)-rel- 2,4,7-Metheno-1H-cyclopenta(a)pentalene, 1,1,2,3,3a,7a-hexachloro-2,3,3a,3b,4,6a,7,7a-octahydro-, (2alpha,3alpha,3aalpha,3balpha,4beta,6aalpha,7beta,7aalpha)- 23421-66-1 Aldrin isomer Photoaldrin SD 18303