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-, compd. with sodium nitrite (1:3) Oxytetracycline mixed with sodium nitrite (1:3) QI8300000 Sodium nitrite mixed with oxytetracycline (3:1)