1,2-Dihydroxy-1,2-dihydrobenzo(b)naphtho(2,1-d)thiophene 125847-45-2 Benzo(b)naphtho(2,1-d)thiophene-1,2-diol, 1,2-dihydro-, trans- CCRIS 4218 trans-1,2-Dihydroxy-1,2-dihydrobenzo(b)naphtho(2,1-d)thiophene