Quinapril

Quinapril
Clinical data

Trade names	Accupril
AHFS/Drugs.com	Monograph
MedlinePlus	a692026
Pregnancy category	D
Routes of administration	Oral
ATC code	C09AA06 (WHO)
Legal status
Legal status	℞ (Prescription only)
Pharmacokinetic data
Protein binding	97%
Biological half-life	2 hours
Identifiers
IUPAC name (3S)-2-[(2S)-2-[[(2S)-1-ethoxy-1-oxo-4-phenylbutan-2-yl]amino]propanoyl]-3,4-dihydro-1H-isoquinoline-3-carboxylic acid
CAS Number	85441-61-8^Y
PubChem (CID)	54892
IUPHAR/BPS	6350
DrugBank	DB00881^Y
ChemSpider	49565^Y
UNII	RJ84Y44811^Y
KEGG	D03752^Y
ChEBI	CHEBI:8713^Y
ChEMBL	CHEMBL1592^Y
Chemical and physical data
Formula	C₂₅H₃₀N₂O₅
Molar mass	438.516 g/mol
3D model (Jmol)	Interactive image
Melting point	120 to 130 °C (248 to 266 °F)
SMILES O=C(OCC)[C@@H](N[C@H](C(=O)N2[C@H](C(=O)O)Cc1c(cccc1)C2)C)CCc3ccccc3
InChI InChI=1S/C25H30N2O5/c1-3-32-25(31)21(14-13-18-9-5-4-6-10-18)26-17(2)23(28)27-16-20-12-8-7-11-19(20)15-22(27)24(29)30/h4-12,17,21-22,26H,3,13-16H2,1-2H3,(H,29,30)/t17-,21-,22-/m0/s1^Y Key:JSDRRTOADPPCHY-HSQYWUDLSA-N^Y

Quinapril (marketed under the brand name Accupril by Pfizer) is an angiotensin-converting enzyme inhibitor (ACE inhibitor) used in the treatment of hypertension and congestive heart failure. A prodrug, it is converted to its active metabolite, quinaprilat, in the liver.

Quinapril inhibits angiotensin converting enzyme, an enzyme which catalyses the formation of angiotensin II from its precursor, angiotensin I. Angiotensin II is a powerful vasoconstrictor and increases blood pressure through a variety of mechanisms. Due to reduced angiotensin production, plasma concentrations of aldosterone are also reduced, resulting in increased excretion of sodium in the urine and increased concentrations of potassium in the blood.

Quinapril is indicated for the treatment of high blood pressure (hypertension) and as adjunctive therapy in the management of heart failure. It may be used for the treatment of hypertension by itself or in combination with thiazide diuretics, and with diuretics and digoxin for heart failure.

Side effects of quinapril include dizziness, cough, vomiting, upset stomach, angioedema, and fatigue.

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