SPL Set ID: 878a1cf9-31a9-425b-910d-042ed91e98d5

Doxycycline for injection, USP is a sterile pale yellow lyophilized powder or cake and an antibacterial drug synthetically derived from oxytetracycline, and is available as doxycycline hyclate USP. The chemical designation of this yellow to light yellow crystalline powder is 4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacenecarboxamide monohydrochloride, compound with ethyl alcohol (2:1), monohydrate. It has the following structural formula: Doxycycline freely soluble in water and in methanol. Sparingly soluble in ethanol (96%). It dissolves in solutions of alkali hydroxides and carbonates. Practically insoluble in chloroform, in ether and in other organic solvents. Each 100 mg vial contains doxycycline hyclate, USP equivalent to 100 mg doxycycline. It also contains ascorbic acid 480 mg and mannitol 300 mg as inactive ingredients and does not contain preservatives. The pH of the reconstituted solution (10 mg/mL) is between 1.8 and 3.3. structural formula