4-Keto-anhydrotetracycline;
4-Ketoanhydrotetracycline;
4-Keto-ATC;
4-Dedimethylamino-4-oxo-anhydrotetracycline;
4-De(dimethylamino)-4-oxoanhydrotetracycline;
(4aR,12aS)-3,10,11,12a-Tetrahydroxy-6-methyl-1,4,12-trioxo-4a,5-dihydrotetracene-2-carboxamide