3,4-Dhdcpp 3,4-Dihydroxy-3,4-dihydrocyclopenta(cd)pyrene 72273-60-0 Cyclopenta(cd)pyrene-3,4-diol, 3,4-dihydro-, (3R,4R)-rel- Cyclopenta(cd)pyrene-3,4-diol, 3,4-dihydro-, trans- trans-3,4-Dihydrocyclopenta(cd)pyrene-3,4-diol trans-Cpp-3,4-diol