SPL Set ID: a62d0ed3-8fcc-45fb-9246-b57b08a11f60

Quinapril hydrochloride is the hydrochloride salt of quinapril, the ethyl ester of a non-sulfhydryl, angiotensin-converting enzyme (ACE) inhibitor, quinaprilat. Quinapril hydrochloride is chemically described as [3S-[2[R*(R*)], 3R*]]-2-[2-[[1­-(ethoxycarbonyl)-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3­­­­­-isoquinolinecarboxylic acid, monohydrochloride. Its molecular formula is C 25 H 30 N 2 O 5 •HCl and its structural formula is: Quinapril hydrochloride USP is a white to off-white powder, with a pink cast at times that is freely soluble in aqueous solvents. Quinapril tablets, USP contain 5 mg (equivalent to 5.416 mg quinapril hydrochloride), 10 mg (equivalent to 10.832 mg quinapril hydrochloride), 20 mg (equivalent to 21.664 mg quinapril hydrochloride), or 40 mg (equivalent to 43.328 mg quinapril hydrochloride) of quinapril for oral administration. Each tablet also contains colloidal silicon dioxide, crospovidone, hydroxypropyl cellulose, hypromellose, iron oxide red, lactose monohydrate, magnesium carbonate, magnesium stearate, polyethylene glycol, povidone, and titanium dioxide.