2-Naphthacenecarboxamide, 4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-, calcium salt (1:2), (4S-(4alpha,4aalpha,5alpha,5aalpha,6alpha,12aalpha))- 564-25-0 94088-85-4 Doxycycline calcium (internal use) EINECS 302-088-9