Trimethoprim
drugOn this page
Also known as InfectotrimetIpralLedatrimMonotrimNIH-204NSC-106568ProloprimProloprinSyraprimTCMDC-125538TiempeTrimethoprim component of bactrimTrimethoprim component of bactrim dsTrimethoprim component of co-trimoxazoleTrimethoprim component of cotrimTrimethoprim component of cotrim d.s.Trimethoprim component of septraTrimethoprim component of sulfamethoprimTrimethoprim component of sulfatrim
Summary
Trimethoprim (CHEMBL22) is an approved small-molecule EC 1.5.1.3 (dihydrofolate reductase) inhibitor (ATC J01EA01); indicated across 36 conditions including urinary tract infection and pneumocystosis.
At a glance
- Status: Approved (max clinical phase 4)
- Modality: Small molecule
- ATC class: J01EA01
- Indications: 36 conditions
- Clinical trials: 56
- Chemistry: 290.32 Da · C14H18N4O3
Identifiers
Drug identity and classification
| Field | Value |
|---|---|
| ChEMBL ID | CHEMBL22 |
| Name | Trimethoprim |
| Type | Small molecule |
| Max phase | 4 |
| FDA approved | yes |
| PubChem CID | 5578 |
| ChEBI | CHEBI:45924 |
| ATC | J01EA01 |
| Molecular formula | C14H18N4O3 |
| Molecular weight | 290.32 |
| InChIKey | IEDVJHCEMCRBQM-UHFFFAOYSA-N |
SMILES: COC1=CC(=CC(=C1OC)OC)CC2=CN=C(N=C2N)N
IUPAC name: 5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidine-2,4-diamine
ChEBI definition: An aminopyrimidine antibiotic whose structure consists of pyrimidine 2,4-diamine and 1,2,3-trimethoxybenzene moieties linked by a methylene bridge.
Pharmacological roles (ChEBI): EC 1.5.1.3 (dihydrofolate reductase) inhibitor, drug allergen, antibacterial drug, diuretic.
Other ChEBI roles (chemical / environmental): xenobiotic, environmental contaminant.
Also known as: Infectotrimet, Ipral, Ledatrim, Monotrim, NIH-204, NSC-106568, Proloprim, Proloprin, Syraprim, TCMDC-125538, Tiempe, Trimethoprim
Parent form; salt/anhydrous children: CHEMBL1201080, CHEMBL1430611, CHEMBL2110367, CHEMBL2237501, CHEMBL2237502
Patent coverage: 16,908 distinct patent families (56,015 SureChEMBL compound mentions), from 3 matched compound structure(s). One matched structure accounts for 56,007 (100%) of the total. Mentions count patents naming the compound (not distinct inventions), so promiscuous / reference molecules inflate the mention figure — families are the dedup metric.
Targets
Targets
Broader ChEMBL bioactivity targets: 31 (assay-derived). Sample: RecQ-like DNA helicase BLM, Endonuclease 4, Dihydrofolate reductase, Dihydrofolate reductase, Dihydrofolate reductase, Bifunctional dihydrofolate reductase-thymidylate synthase, Thyrotropin receptor, Dihydrofolate reductase, Menin/Histone-lysine N-methyltransferase MLL, Dihydrofolate reductase.
Bioactivity
ChEMBL activities: 148 potent at pChembl ≥ 5 of 219 total. Top 30 by potency (10 = 0.1 nM, 6 = 1 µM):
| Target | pChembl | Type | Value | Unit | Activity ID |
|---|---|---|---|---|---|
| P0ABQ4 | 9.66 | Ki | 0.22 | nM | CHEMBL_ACT_16653423 |
| P13922 | 9.23 | Ki | 0.59 | nM | CHEMBL_ACT_25596749 |
| P0A017 | 8.92 | Ki | 1.2 | nM | CHEMBL_ACT_13939400 |
| P0A017 | 8.91 | Ki | 1.24 | nM | CHEMBL_ACT_6329027 |
| P0ABQ4 | 8.89 | Ki | 1.3 | nM | CHEMBL_ACT_1149305 |
| P0ABQ4 | 8.89 | Ki | 1.3 | nM | CHEMBL_ACT_216327 |
| P0ABQ4 | 8.89 | Ki | 1.3 | nM | CHEMBL_ACT_300561 |
| P0ABQ4 | 8.89 | Ki | 1.3 | nM | CHEMBL_ACT_379368 |
| P0ABQ4 | 8.87 | Ki | 1.35 | nM | CHEMBL_ACT_1158566 |
| P22906 | 8.66 | IC50 | 2.2 | nM | CHEMBL_ACT_529963 |
| BLM | 8.49 | Potency | 3.2 | nM | CHEMBL_ACT_4746034 |
| BLM | 8.49 | Potency | 3.2 | nM | CHEMBL_ACT_4929780 |
| P0A017 | 8.46 | Ki | 3.43 | nM | CHEMBL_ACT_16653414 |
| P0A017 | 8.46 | Ki | 3.43 | nM | CHEMBL_ACT_19471512 |
| P0ABQ4 | 8.42 | Ki | 3.8 | nM | CHEMBL_ACT_962279 |
| P0A017 | 8.36 | Ki | 4.4 | nM | CHEMBL_ACT_5225713 |
| P0ABQ4 | 8.3 | IC50 | 5 | nM | CHEMBL_ACT_1123353 |
| P0ABQ4 | 8.3 | IC50 | 5 | nM | CHEMBL_ACT_1208515 |
| P0ABQ4 | 8.3 | IC50 | 5 | nM | CHEMBL_ACT_300557 |
| P0ABQ4 | 8.3 | IC50 | 5 | nM | CHEMBL_ACT_637379 |
| P0ABQ4 | 8.3 | IC50 | 5 | nM | CHEMBL_ACT_800295 |
| P0ABQ4 | 8.3 | IC50 | 5 | nM | CHEMBL_ACT_890108 |
| P0ABQ4 | 8.3 | IC50 | 5 | nM | CHEMBL_ACT_980988 |
| P0A017 | 8.29 | Ki | 5.1 | nM | CHEMBL_ACT_300560 |
| P0ABQ4 | 8.23 | IC50 | 5.89 | nM | CHEMBL_ACT_619503 |
| P0ABQ4 | 8.22 | IC50 | 6 | nM | CHEMBL_ACT_300564 |
| HSD17B10 | 8.2 | Potency | 6.3 | nM | CHEMBL_ACT_4881163 |
| P0A017 | 8.16 | Ki | 6.89 | nM | CHEMBL_ACT_19471519 |
| P0ABQ4 | 8.15 | IC50 | 7 | nM | CHEMBL_ACT_1126168 |
| P0A017 | 8.15 | IC50 | 7 | nM | CHEMBL_ACT_1126169 |
Target pathways
No target-pathway data for this drug (no mapped target genes).
Indications & clinical
Indications
36 indications (5 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 |
|---|---|---|---|
| urinary tract infection | 4 | MONDO:0100338 | EFO:0003103 |
| pneumocystosis | 4 | MONDO:0019121 | EFO:0007448 |
| bacterial infectious disease | 4 | MONDO:0005113 | EFO:0000771 |
| otitis media | 4 | MONDO:0005441 | EFO:0004992 |
| idiopathic pulmonary fibrosis | 3 | MONDO:0800504 | EFO:0000768 |
| malaria | 3 | MONDO:0005136 | EFO:0001068 |
| abscess | 3 | MONDO:0005227 | EFO:0003030 |
| pneumonia | 3 | MONDO:0005249 | EFO:0003106 |
| staphylococcus aureus infection | 3 | MONDO:0005545 | EFO:0005681 |
| ocular toxoplasmosis | 3 | MONDO:0005879 | EFO:0007399 |
| pyelonephritis | 3 | MONDO:0006939 | EFO:1001141 |
| HIV infectious disease | 3 | MONDO:0005109 | EFO:0000764 |
| measles | 3 | MONDO:0004619 | EFO:1002025 |
| tuberculosis | 3 | MONDO:0018076 | MONDO:0018076 |
| epidermolysis bullosa | 2 | MONDO:0006541 | EFO:1000690 |
| type 1 diabetes mellitus | 2 | MONDO:0005147 | MONDO:0005147 |
| cystic fibrosis | 2 | MONDO:0009061 | MONDO:0009061 |
| skin disorder | 2 | MONDO:0005093 | EFO:0000701 |
| dermatitis | 2 | MONDO:0002406 | MONDO:0002406 |
| neoplasm | 1 | MONDO:0005070 | EFO:0000616 |
| kidney disorder | 1 | MONDO:0005240 | EFO:0003086 |
| anemia | 1 | MONDO:0002280 | EFO:0004272 |
| granulomatosis with polyangiitis | 1 | MONDO:0012105 | EFO:0005297 |
| glioblastoma | 1 | MONDO:0018177 | EFO:0000519 |
| anaplastic astrocytoma | 1 | MONDO:0016684 | EFO:0002499 |
| B-cell acute lymphoblastic leukemia | 1 | MONDO:0004947 | EFO:0000094 |
| brain neoplasm | 1 | MONDO:0021211 | EFO:0003833 |
| chronic obstructive pulmonary disease | 1 | MONDO:0005002 | EFO:0000341 |
| T-cell acute lymphoblastic leukemia | 1 | MONDO:0004963 | EFO:0000209 |
| leukemia | 1 | MONDO:0005059 | EFO:0000565 |
| age-related macular degeneration | 1 | MONDO:0005150 | EFO:0001365 |
| osteomyelitis | 0 | MONDO:0005246 | EFO:0003102 |
4 further indication records had no mapped disease name (EFO/MeSH-only) or were duplicates, and are omitted.
Clinical trials
Total trials: 56.
Phase distribution
| Phase | Trials |
|---|---|
| Not specified | 13 |
| PHASE4 | 11 |
| PHASE2 | 11 |
| PHASE3 | 7 |
| PHASE2/PHASE3 | 5 |
| PHASE1/PHASE2 | 5 |
| PHASE1 | 4 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT06499233 | PHASE4 | RECRUITING | Efficacy and Safety of Prophylactic Treatment for Pneumocystis Jirovecii Pneumonia in Patients With Autoimmune Inflammatory Rheumatic Disease |
| NCT06709196 | PHASE4 | RECRUITING | Clinical Trial Testing Whether Targeted Antibiotic Prophylaxis Can Reduce Infections After Cystectomy Compared to Empiric Prophylaxis |
| NCT06982105 | PHASE4 | RECRUITING | Trimethoprim-sulfamethoxazole vs. Clindamycin for the Treatment of Children With Invasive MRSA Infections |
| NCT00382343 | PHASE4 | COMPLETED | A Randomized Controlled Trial on Antibiotic Prophylaxis in Children With Vesico-Ureteral Reflux |
| NCT01167452 | PHASE4 | COMPLETED | Effect of Weight and/or Obesity on Sulfamethoxazole and Trimethoprim Concentrations |
| NCT01723150 | PHASE4 | COMPLETED | Antibiotics for Klebsiella Liver Abscess Study |
| NCT01820897 | PHASE4 | COMPLETED | Efficacy of Fosfomycin-Trometamol in Urinary Tract Infection Prophylaxis After Kidney Transplantation |
| NCT03077711 | PHASE4 | COMPLETED | Methenamine Hippurate Versus Trimethoprim in the Prevention of Recurrent UTIs |
| NCT03228108 | PHASE4 | COMPLETED | Culture-guided Antimicrobial Prophylaxis in Men Undergoing Prostate Biopsy. |
| NCT03235947 | PHASE4 | COMPLETED | Perioperative Fosfomycin in the Prophylaxis of Urinary Tract Infection in Kidney Transplant Recipients |
| NCT03746106 | PHASE4 | COMPLETED | The Effect of SLC19A3 Inhibition on the Pharmacokinetics of Thiamine |
| NCT06737016 | PHASE3 | RECRUITING | Efficacy and Safety of Tamsulosin for Children with Posterior Urethral Valve. |
| NCT07202052 | PHASE2/PHASE3 | RECRUITING | Role of Antibiotic Therapy or Immunoglobulin On iNfections in hAematoLogy Platform Trial (RATIONAL-PT) |
| NCT07202078 | PHASE2/PHASE3 | RECRUITING | Role of Antibiotic Therapy or Immunoglobulin On iNfections in hAematoLogy: Starting Immunoglobulin (Start Ig) |
| NCT07202091 | PHASE2/PHASE3 | RECRUITING | Role of Antibiotic Therapy or Immunoglobulin On iNfections in hAematoLogy Immunoglobulin Stopping or Extension (Stop Ig) |
| NCT00000727 | PHASE3 | COMPLETED | A Controlled Comparative Trial of Sulfamethoxazole-Trimethoprim Versus Aerosolized Pentamidine for Secondary Prophylaxis of Pneumocystis Carinii Pneumonia in AIDS Patients Receiving Azidothymidine (AZT) |
| NCT00002850 | PHASE3 | COMPLETED | Antibiotic Therapy in Preventing Early Infection in Patients With Multiple Myeloma Who Are Receiving Chemotherapy |
| NCT00080119 | PHASE2/PHASE3 | TERMINATED | Daily Isoniazid to Prevent Tuberculosis in Infants Born to Mothers With HIV |
| NCT00691600 | PHASE3 | COMPLETED | Management of Skin and Soft Tissue Abscesses in Pediatric Patients After Incision and Drainage |
| NCT00752375 | PHASE3 | WITHDRAWN | Antibiotic Prophylaxis in Children With Pyelonephritis |
| NCT01747278 | PHASE2/PHASE3 | UNKNOWN | Study of Trimethoprim/Sulfamethoxazole as PCP Prophylaxis in CTD Patients |
| NCT01808755 | PHASE3 | COMPLETED | D Mannose in Recurrent Urinary Tract Infections |
| NCT02021006 | PHASE3 | UNKNOWN | Antibiotic Prophylaxis and Renal Damage In Congenital Abnormalities of the Kidney and Urinary Tract |
| NCT01631617 | PHASE2 | RECRUITING | Effects of Treatments on Atopic Dermatitis |
| NCT03919435 | PHASE1/PHASE2 | ACTIVE_NOT_RECRUITING | TEMPO Study: Trimethoprim-Sulfamethoxazole in Granulomatosis With Polyangiitis |
| NCT03920007 | PHASE1/PHASE2 | ACTIVE_NOT_RECRUITING | Study of Subretinally Injected ATSN-101 Administered in Patients With Leber Congenital Amaurosis Caused by Biallelic Mutations in GUCY2D |
| NCT06536374 | PHASE2 | NOT_YET_RECRUITING | Folate Study in Men With Advanced Prostate Cancer |
| NCT07485010 | PHASE2 | NOT_YET_RECRUITING | Testing a Novel Combination Treatment (Arm D) Versus Standard of Care for Intensive Phase Treatment for Mycobacterium Abscessus Pulmonary Disease in People With or Without Cystic Fibrosis in the Finding the Optimal Regimen for Mycobacterium Abscessus Treatment (FORMaT) Adaptive Platform Trial |
| NCT00014911 | PHASE2 | COMPLETED | Islet Transplantation for Type 1 Diabetes |
| NCT00141037 | PHASE1/PHASE2 | COMPLETED | Steroid-Free Versus Steroid-Based Immunosuppression in Pediatric Renal (Kidney) Transplantation |
| NCT00380640 | PHASE2 | COMPLETED | The Efficacy of Trimethoprim in Wound Healing of Patients With Epidermolysis Bullosa |
| NCT00789464 | PHASE2 | WITHDRAWN | Probiotics for Girls With Recurring Urinary Tract Infections |
| NCT01349192 | PHASE2 | TERMINATED | Early Methicillin-resistant Staphylococcus Aureus (MRSA) Therapy in Cystic Fibrosis (CF) |
| NCT01594827 | PHASE2 | COMPLETED | Persistent Methicillin Resistant Staphylococcus Aureus Eradication Protocol (PMEP) |
| NCT01595529 | PHASE2 | COMPLETED | The SCOUT Study: Short Course Therapy for Urinary Tract Infections in Children |
| NCT01632891 | PHASE1/PHASE2 | COMPLETED | Comparing PI-Based to a nNRTI-based ART for Clearance of Plasmodium Falciparum Parasitemia in HIV-Infected |
| NCT02624440 | PHASE2 | UNKNOWN | Clarithromycin, Sulfamethoxazole/Trimethoprim or Observation in Newly Diagnosed Multiple Myeloma |
| NCT02734732 | PHASE2 | UNKNOWN | Antibiotic Prophylaxis for Transrectal Prostate Biopsy-Ciprofloxacin vs. Trimethoprim/Sulfamethoxazole |
| NCT05418777 | PHASE1/PHASE2 | TERMINATED | Treatment of Pneumocystis in COPD (the TOPIC Study) |
| NCT05302531 | PHASE1 | RECRUITING | Absorption of Antibiotics With High Oral Bioavailability in Short-bowel Syndrome |
Clinical evidence (CIViC)
No CIViC predictive evidence (expected for non-precision-medicine drugs).
Pharmacology
Pharmacogenomics
No CPIC/DPWG dosing guideline, but PharmGKB curates 0 clinical and 5 variant annotation(s) for this drug (gene-keyed; see PharmGKB).
Related molecules
Related molecules
No competitor molecules sharing a primary target (ChEMBL phase ≥2 or PubChem drug-class).