Synonyms: Rifamycin, 8-(morpholinomethyl)-;PF-49;NSC 144143;NCI 144-143;2,7-(Epoxypentadeca(1,11,13)trienimino)naphtho(2,1-b)furan-1,11(2H)-dione, 5,6,9,17,19,21-hexahydroxy-2,4,12,16,18,20,22-heptamethyl-23-methoxy-8-(morpholinomethyl)-, 21-acetate;4075-43-8;NSC144143;NSC-144143;LS-64223