3'-Azetidine-3'-azetidine-actinomycin 59481-55-9 ACTINOMYCIN,3'-AZETIDINE-3'-AZETIDINE AZET 2 Actinomycin D, 3A-(2-azetidinecarboxylic acid)-3B-(2-azetidinecarboxylic acid)- Azetomicin II Azetomycin II NSC 244393 NSC244393