Captopril
drugOn this page
Also known as AceprilApoprilC09AA01CapotenCaptomaxCaptomexCaptoprilumEcopaceFarcoprilGarranilHypopressHyteneze 12.5Hyteneze 25Hyteneze 50KaplonLoprilMephaNoyadaNSC-757419
Summary
Captopril (CHEMBL1560) is an approved small-molecule EC 3.4.15.1 (peptidyl-dipeptidase A) inhibitor (ATC C09AA01) targeting ACE; indicated across 20 conditions including congestive heart failure and hypertensive disorder.
At a glance
- Status: Approved (max clinical phase 4)
- Modality: Small molecule
- ATC class: C09AA01
- Targets: 1 (ACE)
- Indications: 20 conditions
- Clinical trials: 37
- Chemistry: 217.29 Da · C9H15NO3S
Identifiers
Drug identity and classification
| Field | Value |
|---|---|
| ChEMBL ID | CHEMBL1560 |
| Name | Captopril |
| Type | Small molecule |
| Max phase | 4 |
| FDA approved | yes |
| PubChem CID | 44093 |
| ChEBI | CHEBI:3380 |
| ATC | C09AA01 |
| Molecular formula | C9H15NO3S |
| Molecular weight | 217.29 |
| InChIKey | FAKRSMQSSFJEIM-RQJHMYQMSA-N |
SMILES: C[C@H](CS)C(=O)N1CCC[C@H]1C(=O)O
IUPAC name: (2S)-1-[(2S)-2-methyl-3-sulfanylpropanoyl]pyrrolidine-2-carboxylic acid
ChEBI definition: A L-proline derivative in which L-proline is substituted on nitrogen with a (2S)-2-methyl-3-sulfanylpropanoyl group. It is used as an anti-hypertensive ACE inhibitor drug.
Pharmacological roles (ChEBI): EC 3.4.15.1 (peptidyl-dipeptidase A) inhibitor, antihypertensive agent.
Also known as: Acepril, Apopril, C09AA01, Capoten, Captomax, Captomex, Captopril, Captoprilum, Ecopace, Farcopril, Garranil, Hypopress
Patent coverage: 18,303 distinct patent families (66,415 SureChEMBL compound mentions), from 1 matched compound structure(s). Mentions count patents naming the compound (not distinct inventions), so promiscuous / reference molecules inflate the mention figure — families are the dedup metric.
Targets
Targets
Primary targets (GtoPdb curated mechanism): the Cancer dependency column is the DepMap CRISPR fitness signal (% of screened cell lines dependent on the target).
| Gene | Target | Action | pAffinity | Cancer dependency | UniProt |
|---|---|---|---|---|---|
| ACE | Angiotensin-converting enzyme | Inhibition | 8.4 | 0.7% | P12821 |
Broader ChEMBL bioactivity targets: 23 (assay-derived). Sample: Succinyl-diaminopimelate desuccinylase, Microtubule-associated protein tau, Lysine-specific demethylase 4E, Prelamin-A/C, 4’-phosphopantetheinyl transferase ffp, Thrombopoietin, Peripheral myelin protein 22, Metallo-beta-lactamase type 2, Angiotensin-converting enzyme, Prothrombin.
Bioactivity
ChEMBL activities: 81 potent at pChembl ≥ 5 of 106 total. Top 30 by potency (10 = 0.1 nM, 6 = 1 µM):
| Target | pChembl | Type | Value | Unit | Activity ID |
|---|---|---|---|---|---|
| ACE | 9.92 | IC50 | 0.12 | nM | CHEMBL_ACT_2722713 |
| ACE | 9.2 | IC50 | 0.63 | nM | CHEMBL_ACT_2573366 |
| ACE | 8.79 | IC50 | 1.61 | nM | CHEMBL_ACT_15619819 |
| P12822 | 8.77 | Ki | 1.7 | nM | CHEMBL_ACT_673025 |
| REN | 8.77 | Ki | 1.7 | nM | CHEMBL_ACT_748542 |
| ACE | 8.7 | Ki | 2 | nM | CHEMBL_ACT_13830431 |
| P47820 | 8.7 | Ki | 2 | nM | CHEMBL_ACT_830786 |
| P12822 | 8.64 | IC50 | 2.3 | nM | CHEMBL_ACT_871862 |
| P47820 | 8.52 | IC50 | 3 | nM | CHEMBL_ACT_1181536 |
| P47820 | 8.49 | IC50 | 3.23 | nM | CHEMBL_ACT_18313507 |
| P12822 | 8.44 | IC50 | 3.6 | nM | CHEMBL_ACT_871861 |
| ACE | 8.3 | IC50 | 5 | nM | CHEMBL_ACT_2175818 |
| ACE | 8.2 | IC50 | 6.3 | nM | CHEMBL_ACT_18652535 |
| ACE | 8.2 | IC50 | 6.3 | nM | CHEMBL_ACT_24989632 |
| ACE | 8.2 | IC50 | 6.3 | nM | CHEMBL_ACT_29294968 |
| ACE | 8.05 | IC50 | 9 | nM | CHEMBL_ACT_1162706 |
| ACE | 8.05 | IC50 | 9 | nM | CHEMBL_ACT_298206 |
| P12822 | 8 | IC50 | 10 | nM | CHEMBL_ACT_679962 |
| ACE | 8 | IC50 | 10 | nM | CHEMBL_ACT_876619 |
| ACE | 7.96 | IC50 | 11 | nM | CHEMBL_ACT_14567912 |
| P47820 | 7.96 | IC50 | 11 | nM | CHEMBL_ACT_599966 |
| ACE | 7.92 | IC50 | 12 | nM | CHEMBL_ACT_114010 |
| ACE | 7.92 | IC50 | 12 | nM | CHEMBL_ACT_25090606 |
| P47820 | 7.92 | IC50 | 12 | nM | CHEMBL_ACT_293218 |
| P12822 | 7.89 | IC50 | 13 | nM | CHEMBL_ACT_315152 |
| ACE | 7.89 | IC50 | 12.9 | nM | CHEMBL_ACT_333748 |
| ACE | 7.89 | IC50 | 13 | nM | CHEMBL_ACT_375311 |
| P12822 | 7.82 | IC50 | 15 | nM | CHEMBL_ACT_1087213 |
| P12822 | 7.82 | IC50 | 15 | nM | CHEMBL_ACT_1168024 |
| P47820 | 7.82 | IC50 | 15 | nM | CHEMBL_ACT_1302082 |
Target pathways
Aggregated over 1 target gene(s): ACE.
Top Reactome pathways
3 total, by targets touching each:
| Pathway | Targets | Genes |
|---|---|---|
| Metabolism of Angiotensinogen to Angiotensins | 1 | ACE |
| Peptide hormone metabolism | 1 | ACE |
| Metabolism of proteins | 1 | ACE |
Dominant GO biological processes
| GO term | Targets |
|---|---|
| kidney development | 1 |
| blood vessel remodeling | 1 |
| angiotensin maturation | 1 |
| regulation of renal output by angiotensin | 1 |
| neutrophil mediated immunity | 1 |
| antigen processing and presentation of peptide antigen via MHC class I | 1 |
| regulation of systemic arterial blood pressure by renin-angiotensin | 1 |
| positive regulation of systemic arterial blood pressure | 1 |
| proteolysis | 1 |
| spermatogenesis | 1 |
| regulation of blood pressure | 1 |
| male gonad development | 1 |
| post-transcriptional regulation of gene expression | 1 |
| negative regulation of gene expression | 1 |
| substance P catabolic process | 1 |
Indications & clinical
Indications
20 indications (10 at ChEMBL trial phase 4). Phase below is the highest clinical-trial phase recorded for this drug against each disease — not the molecule’s overall approval status (that is in the Summary).
| Indication | Trial phase | MONDO | EFO |
|---|---|---|---|
| congestive heart failure | 4 | MONDO:0005009 | EFO:0000373 |
| hypertensive disorder | 4 | MONDO:0005044 | EFO:0000537 |
| myocardial infarction | 4 | MONDO:0005068 | EFO:0000612 |
| diabetic kidney disease | 4 | MONDO:0005016 | EFO:0000401 |
| cardiovascular disorder | 4 | MONDO:0004995 | EFO:0000319 |
| diabetic retinopathy | 4 | MONDO:0005266 | EFO:0003770 |
| heart failure | 4 | MONDO:0005252 | EFO:0003144 |
| rheumatic disorder | 4 | MONDO:0005554 | EFO:0005755 |
| kidney failure | 4 | MONDO:0001106 | EFO:1002048 |
| severe acute respiratory syndrome | 3 | MONDO:0005091 | MONDO:0100096 |
| essential hypertension | 3 | MONDO:0001134 | MONDO:0001134 |
| type 1 diabetes mellitus | 3 | MONDO:0005147 | MONDO:0005147 |
| heart disorder | 2 | MONDO:0005267 | EFO:0003777 |
| pneumonia | 2 | MONDO:0005249 | EFO:0003106 |
| glioblastoma | 1 | MONDO:0018177 | EFO:0000519 |
| neoplasm | 1 | MONDO:0005070 | EFO:0000616 |
| pulmonary arterial hypertension | 1 | MONDO:0015924 | EFO:0001361 |
| primary myelofibrosis | 1 | MONDO:0009692 | EFO:0002430 |
| type 2 diabetes mellitus | 1 | MONDO:0005148 | MONDO:0005148 |
1 further indication record had no mapped disease name (EFO/MeSH-only) or were duplicates, and are omitted.
Clinical trials
Total trials: 37.
Phase distribution
| Phase | Trials |
|---|---|
| PHASE4 | 10 |
| Not specified | 10 |
| PHASE1/PHASE2 | 5 |
| PHASE2 | 4 |
| PHASE1 | 4 |
| PHASE3 | 2 |
| PHASE2/PHASE3 | 1 |
| EARLY_PHASE1 | 1 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT07547878 | PHASE4 | NOT_YET_RECRUITING | Rapid and Simultaneous Initiation of Four Guideline-Directed CKD Therapies (RAPID-CKD) |
| NCT00155064 | PHASE4 | COMPLETED | Kallikrein-kinin (KKS) and Renin-angiotensin-aldosterone System (RAAS) in Primary Aldosteronism |
| NCT00252317 | PHASE4 | UNKNOWN | Acute Haemodynamic Effects of Treatment With Angiotensin Converting Enzyme (ACE)-Inhibitors in Patients With Symptomatic Aortic Stenosis |
| NCT00391846 | PHASE4 | COMPLETED | Evaluation of Heart Failure Treatment Guided by N-terminal Pro B-type Natriuretic Peptide (NTproBNP) vs Clinical Symptoms and Signs Alone |
| NCT00660309 | PHASE4 | COMPLETED | A Clinical Study to Evaluate Renal Hemodynamic Responses to Aliskiren in Patients With Type 2 Diabetes Mellitus |
| NCT01545479 | PHASE4 | COMPLETED | Increased Renal Oxygenation and Angiotensin Converting Enzyme Inhibition |
| NCT01761916 | PHASE4 | COMPLETED | Clonidine Versus Captopril for Treatment of Postpartum Very High Blood Pressure |
| NCT02217852 | PHASE4 | UNKNOWN | Treatment of Hypertension in Tibetan Adult Population |
| NCT04288700 | PHASE4 | UNKNOWN | Evaluation of the Efficacy of Captopril Versus Propranolol and Timolol as a Treatment of Infantile Capillary Hemangioma |
| NCT04485845 | PHASE4 | UNKNOWN | Metformin Versus Vildagliptin in Reducing Risk of Metabolic Syndrome Complications Progression |
| NCT00004230 | PHASE3 | COMPLETED | Captopril in Treating Patients Undergoing Bone Marrow or Stem Cell Transplantation |
| NCT00663949 | PHASE2/PHASE3 | COMPLETED | Assessment of the Effect of Captopril Versus Combination of Captopril and Pentoxifylline on Reducing Proteinuria in Type 2 Diabetic Nephropathy |
| NCT01437371 | PHASE3 | COMPLETED | Is There a Benefit to Optimize Heart Failure (HF) Treatment in Aged Over 80 Year’s Old Patients? |
| NCT00077064 | PHASE2 | TERMINATED | Captopril in Treating Patients With Non-Small Cell Lung Cancer or Limited-Stage Small Cell Lung Cancer That Has Been Previously Treated With Radiation Therapy With or Without Chemotherapy |
| NCT00086723 | PHASE1/PHASE2 | COMPLETED | In Vivo Angiostatin Generation Using Tissue Plasminogen Activator and Captopril in Treating Patients With Progressive Metastatic Cancer |
| NCT00742040 | PHASE2 | UNKNOWN | Rapid Versus Prolonged Inpatient Up-Titration of Captopril |
| NCT01626469 | PHASE1/PHASE2 | UNKNOWN | Measurement of Eye Blood Flow and Renal Function in Healthy and Diabetic Patients |
| NCT02770378 | PHASE1/PHASE2 | COMPLETED | A Proof-of-concept Clinical Trial Assessing the Safety of the Coordinated Undermining of Survival Paths by 9 Repurposed Drugs Combined With Metronomic Temozolomide (CUSP9v3 Treatment Protocol) for Recurrent Glioblastoma |
| NCT03179163 | PHASE1/PHASE2 | TERMINATED | Peripheral Vascular Effects of Sulfhydryl-containing Antihypertensive Pharmacotherapy on Microvessels in Humans |
| NCT03613506 | PHASE2 | UNKNOWN | The Role and Intervention of TGF-β in Abdominal Radiation Injury |
| NCT04355429 | PHASE2 | UNKNOWN | Efficacy of Captopril in Covid-19 Patients With Severe Acute Respiratory Syndrome (SARS) CoV-2 Pneumonia (CAPTOCOVID) |
| NCT04629651 | PHASE1/PHASE2 | WITHDRAWN | Captopril Use on the Degree of Marrow Fibrosis in Bone Marrow Fibrosis/Myeloproliferative Neoplasms |
| NCT00223717 | PHASE1 | COMPLETED | Treatment of Supine Hypertension in Autonomic Failure |
| NCT01292694 | PHASE1 | TERMINATED | Contribution of Angiotensin II to Supine Hypertension in Autonomic Failure |
| NCT04878315 | PHASE1 | WITHDRAWN | Bioequivalence Study Between Capoten Versus Captopril Reference Product in Healthy Adult Participants Under Fasting Conditions |
| NCT06292091 | PHASE1 | COMPLETED | A Study to Investigate the Effect of Urine Acid-base Disequilibrium on the Pharmacokinetics of Captopril |
| NCT06485661 | EARLY_PHASE1 | RECRUITING | Effect of Captopril on GLS in Duchenne Myodystrophy |
| NCT05442463 | Not specified | RECRUITING | Hormone Therapy and Angiotensin-Dependent Arterial and Renal Vasoconstriction in Humans |
| NCT00292162 | Not specified | COMPLETED | Curing Atrial Fibrillation in Heart Failure |
| NCT00917345 | Not specified | UNKNOWN | Diagnosis of Primary Aldosteronism: Comparison of Post Captopril Active Renin Concentration and Plasma Renin Activity |
| NCT00935805 | Not specified | UNKNOWN | Glycemic And Blood Pressure Control In Type 2 Diabetes, In A Primary Care Unit: A Staged Management Strategy |
| NCT03660293 | Not specified | COMPLETED | Prediction and Prevention of Asymptomatic Cardiovascular Insult in Type 1 Diabetic Children: Comparative Effectiveness of Cardioprotective Drugs |
| NCT04371874 | Not specified | COMPLETED | The Standardized Management of Hypertension in Rural Shaanxi |
| NCT04893629 | Not specified | TERMINATED | New Horizons for the Treatment of Cardiomyopathy in Children |
| NCT06037434 | Not specified | UNKNOWN | Study of Innovative Drug Treatment Therapy for Pediatric Mitral Regurgitation |
| NCT06039540 | Not specified | UNKNOWN | Study of Drug Therapy for Pediatric Heart Failure |
| NCT06039592 | Not specified | UNKNOWN | Study of Innovative Drug Strategies in Improving Left Ventricular Function After Mitral Repair |
Clinical evidence (CIViC)
No CIViC predictive evidence (expected for non-precision-medicine drugs).
Pharmacology
Pharmacogenomics
No CPIC/DPWG dosing guideline, but PharmGKB curates 4 clinical and 13 variant annotation(s) for this drug (gene-keyed; see PharmGKB).
Related molecules
Related molecules
Molecules sharing ≥1 of this drug’s curated primary targets, merged from two biobtree sources and ranked by shared-target count, then clinical phase: ChEMBL clinical-stage candidates (development phase ≥2) and PubChem drug-class bioactivity (approved / known drugs acting on the target). Deduplicated by drug name; the drug’s own salt forms are excluded. Note: for a drug with few primary targets a shared-target match can reflect off-target / promiscuous binding rather than the same therapeutic mechanism — the phase ordering surfaces bona-fide therapeutics first.
32 molecules share ≥1 primary target. Top 32 by shared-target count:
| Molecule | Source | Status | Shared targets |
|---|---|---|---|
| LOSARTAN | ChEMBL + PubChem | Phase 4 (approved) | ACE |
| PERINDOPRIL | ChEMBL + PubChem | Phase 4 (approved) | ACE |
| SITAGLIPTIN | ChEMBL + PubChem | Phase 4 (approved) | ACE |
| BENAZEPRIL | ChEMBL | Phase 4 (approved) | ACE |
| ENALAPRIL | ChEMBL | Phase 4 (approved) | ACE |
| ENALAPRILAT | ChEMBL | Phase 4 (approved) | ACE |
| FOSINOPRIL | ChEMBL | Phase 4 (approved) | ACE |
| IMIDAPRIL | ChEMBL | Phase 4 (approved) | ACE |
| LISINOPRIL | ChEMBL | Phase 4 (approved) | ACE |
| MOEXIPRIL | ChEMBL | Phase 4 (approved) | ACE |
| QUINAPRIL | ChEMBL | Phase 4 (approved) | ACE |
| RAMIPRIL | ChEMBL | Phase 4 (approved) | ACE |
| TELMISARTAN | ChEMBL | Phase 4 (approved) | ACE |
| TRANDOLAPRIL | ChEMBL | Phase 4 (approved) | ACE |
| EDETIC ACID | ChEMBL | Phase 3 | ACE |
| QUINAPRILAT | ChEMBL + PubChem | Phase 2 (approved) | ACE |
| BENAZEPRILAT | ChEMBL | Phase 2 | ACE |
| CERONAPRIL | ChEMBL | Phase 2 | ACE |
| FOSINOPRILAT | ChEMBL | Phase 2 | ACE |
| IMIDAPRILAT | ChEMBL | Phase 2 | ACE |
| LIBENZAPRIL | ChEMBL | Phase 2 | ACE |
| MOEXIPRILAT | ChEMBL | Phase 2 | ACE |
| OMAPATRILAT | ChEMBL | Phase 2 | ACE |
| PROLINE | ChEMBL | Phase 2 | ACE |
| RENTIAPRIL | ChEMBL | Phase 2 | ACE |
| SAMPATRILAT | ChEMBL | Phase 2 | ACE |
| SPIRAPRILAT | ChEMBL | Phase 2 | ACE |
| TEPROTIDE | ChEMBL | Phase 2 | ACE |
| ZOFENOPRIL | ChEMBL | Phase 2 | ACE |
| Gallic Acid | PubChem | Approved | ACE |
| Hydrochlorothiazide | PubChem | Approved | ACE |
| Paclitaxel | PubChem | Approved | ACE |
Related Atlas pages
- Genes: ACE
- Diseases: congestive heart failure, hypertensive disorder, myocardial infarction, diabetic kidney disease, cardiovascular disorder, diabetic retinopathy, heart failure, rheumatic disorder, kidney failure, severe acute respiratory syndrome, essential hypertension, type 1 diabetes mellitus
- Drugs: Losartan, Perindopril, Sitagliptin, Benazepril, Enalapril, Enalaprilat, Fosinopril, Imidapril, Lisinopril, Moexipril, Quinapril, Ramipril, Telmisartan, Trandolapril, Edetic Acid, Hydrochlorothiazide, Paclitaxel