SPL Set ID: 3ffe0294-3959-2755-e054-00144ff8d46c

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 is a white to off-white crystalline powder which is moderately soluble in water. Quetiapine Extended-release tablets, USP are supplied for oral administration as 150 mg (white), 200 mg (yellow), 300 mg (light yellow), and 400 mg (white). All tablets are round shaped and film coated. Inactive ingredients for quetiapine extended-release tablets, USP are lactose monohydrate, sodium chloride, hydroxypropyl methylcellulose, povidone K30, talc and magnesium stearate. The film coating for all quetiapine extended-release tablets contain hypromellose, polyethylene glycol 400 and titanium dioxide. In addition, iron oxide yellow (200 and 300 mg tablets) is included in the film coating of specific strengths. Each 150 mg tablet contains 173 mg of quetiapine fumarate, USP equivalent to 150 mg quetiapine. Each 200 mg tablet contains 230 mg of quetiapine fumarate, USP equivalent to 200 mg quetiapine. Each 300 mg tablet contains 345 mg of quetiapine fumarate, USP equivalent to 300 mg quetiapine. Each 400 mg tablet contains 461 mg of quetiapine fumarate, USP equivalent to 400 mg quetiapine. Quetiapine Extended-release tablets, USP meet USP Dissolution Test 2. structural formula