2-Naphthacenecarboxamide, 4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,6,10,12,12a-hexahydroxy-6-methyl-1,11-dioxo-, calcium salt (1:1), (4S-(4-alpha,4a-alpha,5-alpha,5a-alpha,6-beta,12a-alpha))- 7179-50-2 79-57-2 Calcium oxytetracycline EINECS 230-540-4 Oxytetracycline calcium