19879-06-2 8,11-Ethanofuro(2,3-e)naphtho(2,3-c:6,7-c')dipyran-2,6,13(9H)-trione, 3,3a,5,8,11,13b-hexahydro-7,8,12,15-tetrahydroxy-5,9-dimethyl-,(3aS-(3aalpha,5alpha,8alpha,9alpha,11beta,13balpha,15S*))- (9CI) 91C-JWN-79 Antibiotic WR 141 GRANATICIN Granaticin A Granatomycin C Litmomycin Litomycin NSC 77038 U 19728 Upjohn 206t WR 141