SPL Set ID: 6562eb60-0d70-4909-bd07-88d5c9241516

Quetiapine is an atypical antipsychotic belonging to a chemical class, the dibenzothiazepine derivatives. The chemical designation is 2-[2-(4-dibenzo [ b,f ] [1,4] thiazepin-11-yl-1­-piperazinyl)ethoxy]-ethanol fumarate (2:1) (salt). It is present in tablets as the fumarate salt. All doses and tablet strengths are expressed as milligrams of base, not as fumarate salt. Its molecular formula is C 42 H 50 N 6 O 4 S 2 •C 4 H 4 O 4 and it has a molecular weight of 883.11 (fumarate salt). The structural formula is: Quetiapine fumarate USP is a white to off-white powder which is moderately soluble in water. Quetiapine extended-release tablets, USP are supplied for oral administration as 50 mg (peach), 150 mg (white), 200 mg (yellow), 300 mg (pale yellow), and 400 mg (white). All tablets are capsule shaped and film-coated. Inactive ingredients for quetiapine extended-release tablets, USP are hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, propylene glycol, sodium citrate, titanium dioxide. In addition, the 50 mg contains iron oxide red and iron oxide yellow, the 200 mg, and 300 mg contains iron oxide yellow. Each 50 mg tablet contains 57.56 mg of quetiapine fumarate USP equivalent to 50 mg quetiapine. Each 150 mg tablet contains 172.68 mg of quetiapine fumarate USP equivalent to 150 mg quetiapine. Each 200 mg tablet contains 230.24 mg of quetiapine fumarate USP equivalent to 200 mg quetiapine. Each 300 mg tablet contains 345.37 mg of quetiapine fumarate USP equivalent to 300 mg quetiapine. Each 400 mg tablet contains 460.49 mg of quetiapine fumarate USP equivalent to 400 mg quetiapine. Meets USP Dissolution Test 14. Chemical Structure