CAS Chemical Name SMILES #Obs_CA_with_S9 #in vitro predicted CA with S9 Metabo Smiles Reference 30516-87-1 Thymidine, 3'-azido-3'-deoxy- CC1=CN(C2CC(N=N#N)C(CO)O2)C(=O)NC1=O in vitro CA positive in vitro CA positive CC1=CN(C2CC(N=N#N)C(CO)O2)C(=O)NC1=O; N#N=NC1CC(N2C=C(CO)C(=O)NC2=O)OC1CO C.M. González, I. Larripa, Genotoxic activity of azidothymidine (AZT) in in vitro systems, Mutat. Res. 321 (1994) 113-118.