Triazolam
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Also known as HalcionKentionN05CD05Triazolam civU-33,030U-33030SID50113071SID144206170
Summary
Triazolam (CHEMBL646) is an approved small-molecule sedative (ATC N05CD05) targeting GABRA1, GABRA2, and GABRA3; indicated across 6 conditions including insomnia and anxiety.
At a glance
- Status: Approved (max clinical phase 4)
- Modality: Small molecule
- ATC class: N05CD05
- Targets: 4 (GABRA1, GABRA2, GABRA3…)
- Indications: 6 conditions
- Clinical trials: 9
- Chemistry: 343.2 Da · C17H12Cl2N4
Identifiers
Drug identity and classification
| Field | Value |
|---|---|
| ChEMBL ID | CHEMBL646 |
| Name | Triazolam |
| Type | Small molecule |
| Max phase | 4 |
| FDA approved | yes |
| PubChem CID | 5556 |
| ChEBI | CHEBI:9674 |
| ATC | N05CD05 |
| Molecular formula | C17H12Cl2N4 |
| Molecular weight | 343.2 |
| InChIKey | JOFWLTCLBGQGBO-UHFFFAOYSA-N |
SMILES: CC1=NN=C2N1C3=C(C=C(C=C3)Cl)C(=NC2)C4=CC=CC=C4Cl
IUPAC name: 8-chloro-6-(2-chlorophenyl)-1-methyl-4H-[1,2,4]triazolo[4,3-a][1,4]benzodiazepine
Pharmacological roles (ChEBI): sedative.
Also known as: Halcion, Kention, N05CD05, Triazolam, Triazolam civ, U-33,030, U-33030, triazolam, SID50113071, TRIAZOLAM, SID144206170
Patent coverage: 5,626 distinct patent families (21,589 SureChEMBL compound mentions), from 4 matched compound structure(s). One matched structure accounts for 21,447 (99%) 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
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 |
|---|---|---|---|---|---|
| GABRA1 | GABAA receptor α1 subunit | Positive | 9 | 0% | P14867 |
| GABRA2 | GABAA receptor α2 subunit | Positive | 9.23 | 0% | P47869 |
| GABRA3 | GABAA receptor α3 subunit | Positive | 8.84 | 0% | P34903 |
| GABRA5 | GABAA receptor α5 subunit | Positive | 8.4 | 0.9% | P31644 |
Broader ChEMBL bioactivity targets: 15 (assay-derived). Sample: Nuclear receptor ROR-gamma, GABA-A receptor; anion channel, Gamma-aminobutyric acid receptor subunit alpha-1, GABA-A receptor; alpha-3/beta-3/gamma-2, GABA-A receptor; alpha-1/beta-3/gamma-2, GABA-A receptor; alpha-5/beta-3/gamma-2, GABA-A receptor; alpha-2/beta-3/gamma-2, 5-hydroxytryptamine receptor 2A, Alpha-1A adrenergic receptor, Kappa-type opioid receptor.
Bioactivity
ChEMBL activities: 12 potent at pChembl ≥ 5 of 16 total. Top 30 by potency (10 = 0.1 nM, 6 = 1 µM):
| Target | pChembl | Type | Value | Unit | Activity ID |
|---|---|---|---|---|---|
| GABRG2 | 9.23 | Ki | 0.59 | nM | CHEMBL_ACT_599587 |
| GABRA1 | 9.1 | Ki | 0.8 | nM | CHEMBL_ACT_599586 |
| O09028 | 9.1 | Ki | 0.8 | nM | CHEMBL_ACT_684273 |
| GABRA1 | 9 | Kd | 1 | nM | CHEMBL_ACT_2461330 |
| P62813 | 8.96 | AC50 | 1.1 | nM | CHEMBL_ACT_25131171 |
| GABRG2 | 8.85 | Ki | 1.43 | nM | CHEMBL_ACT_599588 |
| GABRG2 | 8.81 | Ki | 1.54 | nM | CHEMBL_ACT_599589 |
| GABRA5 | 8.4 | Kd | 4 | nM | CHEMBL_ACT_2461351 |
| P51450 | 6.1 | Potency | 794.3 | nM | CHEMBL_ACT_4814933 |
| OPRK1 | 5.76 | AC50 | 1716 | nM | CHEMBL_ACT_25129971 |
| O09028 | 5.68 | Ki | 2086 | nM | CHEMBL_ACT_684274 |
| HTR2A | 5.5 | AC50 | 3195 | nM | CHEMBL_ACT_25173810 |
Target pathways
Aggregated over 4 target gene(s): GABRA1, GABRA2, GABRA3, GABRA5.
Top Reactome pathways
2 total, by targets touching each:
| Pathway | Targets | Genes |
|---|---|---|
| GABA receptor activation | 4 | GABRA1, GABRA2, GABRA3, GABRA5 |
| Signaling by ERBB4 | 1 | GABRA1 |
Dominant GO biological processes
| GO term | Targets |
|---|---|
| gamma-aminobutyric acid signaling pathway | 4 |
| synaptic transmission, GABAergic | 4 |
| chloride transmembrane transport | 4 |
| inhibitory synapse assembly | 4 |
| monoatomic ion transport | 4 |
| chloride transport | 4 |
| monoatomic ion transmembrane transport | 4 |
| regulation of postsynaptic membrane potential | 4 |
| regulation of presynaptic membrane potential | 2 |
| behavioral fear response | 1 |
| signal transduction | 1 |
| associative learning | 1 |
| inner ear receptor cell development | 1 |
| innervation | 1 |
| cochlea development | 1 |
Indications & clinical
Indications
6 indications (1 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 |
|---|---|---|---|
| insomnia | 4 | MONDO:0013600 | EFO:0004698 |
| anxiety | 3 | MONDO:0011918 | EFO:0005230 |
| dementia | 3 | MONDO:0001627 | HP:0000726 |
| depressive disorder | 3 | MONDO:0002050 | MONDO:0002050 |
| drug dependence | 2 | MONDO:0005303 | EFO:0003890 |
1 further indication record had no mapped disease name (EFO/MeSH-only) or were duplicates, and are omitted.
Clinical trials
Total trials: 9.
Phase distribution
| Phase | Trials |
|---|---|
| PHASE1 | 4 |
| PHASE3 | 2 |
| Not specified | 2 |
| PHASE4 | 1 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT03246724 | PHASE4 | COMPLETED | Oral Versus Intravenous Sedation for Ocular Procedures |
| NCT01888497 | PHASE3 | COMPLETED | Next-Day Residual Effects of Gabapentin, Diphenhydramine and Triazolam on Simulated Driving Performance in Normal Volunteers |
| NCT02374567 | PHASE3 | TERMINATED | Pharmacovigilance in Gerontopsychiatric Patients |
| NCT01017926 | PHASE1 | WITHDRAWN | Triazolam Trial In Healthy Subjects To Compare Bioavailability Between Formulations Of Triazolam To Determine Their Bioequivalence In Terms Of Rate And Magnitude Of Absorption |
| NCT01421043 | PHASE1 | COMPLETED | A Study to Determine Whether an Oral Drops Formulation of Triazolam is Bioequivalent to a Tablet Formulation in Healthy Subjects |
| NCT01780259 | PHASE1 | COMPLETED | A Study to Assess the Pharmacokinetics, Safety, and Tolerability of Intranasally Administered Esketamine in Healthy Participants |
| NCT06837142 | PHASE1 | COMPLETED | A Drug-drug Interaction Study With TS-172 in Healthy Adult Male Subjects |
| NCT02822937 | Not specified | COMPLETED | Sensitivity of Project: EVO Monitor Cognitive Measurements to Pharmacological Agents |
| NCT03360123 | Not specified | COMPLETED | Comparison of Triazolam and Midazolam for Anxiolysis During Dental Treatment in the Pediatric Patient |
Clinical evidence (CIViC)
No CIViC predictive evidence (expected for non-precision-medicine drugs).
Pharmacology
Pharmacogenomics
No CPIC/DPWG dosing guideline or drug-level clinical/variant annotations in PharmGKB for this molecule.
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.
75 molecules share ≥1 primary target. Top 60 by shared-target count:
| Molecule | Source | Status | Shared targets |
|---|---|---|---|
| ALPRAZOLAM | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| APALUTAMIDE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| BREXANOLONE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| CHLORDIAZEPOXIDE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| CLONAZEPAM | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| DIAZEPAM | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| ENZALUTAMIDE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| FLUMAZENIL | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| FLUNITRAZEPAM | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| GANAXOLONE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| LIOTHYRONINE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| PROPOFOL | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| ALFAXALONE | ChEMBL + PubChem | Phase 2 (approved) | GABRA1, GABRA2, GABRA3, GABRA5 |
| ABECARNIL | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| AZD7325 | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| BAICALEIN | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| BASMISANIL | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| BRETAZENIL | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| DELORAZEPAM | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| FLAVONE | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| MK-0777 | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| PROGABIDE | ChEMBL | Phase 2 | GABRA1, GABRA2, GABRA3, GABRA5 |
| ESZOPICLONE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3 |
| ZOLPIDEM | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2, GABRA3 |
| DARIGABAT | ChEMBL | Phase 2 | GABRA1, GABRA3, GABRA5 |
| CRIZOTINIB | ChEMBL + PubChem | Phase 4 (approved) | GABRA1, GABRA2 |
| ASENAPINE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| AZELASTINE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| BENPERIDOL | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| CANDESARTAN CILEXETIL | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| CHLORAMBUCIL | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| CLOZAPINE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| EPINASTINE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| ETOMIDATE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| GLAFENINE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| SIMVASTATIN | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| TIPRANAVIR | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| TROGLITAZONE | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| ZALEPLON | ChEMBL | Phase 4 (approved) | GABRA1, GABRA2 |
| SURAMIN | ChEMBL | Phase 3 | GABRA1, GABRA2 |
| TIRATRICOL | ChEMBL | Phase 3 | GABRA1, GABRA2 |
| PANADIPLON | ChEMBL | Phase 2 | GABRA1, GABRA3 |
| SARIPIDEM | ChEMBL | Phase 2 | GABRA1, GABRA5 |
| ZOTEPINE | ChEMBL | Phase 2 | GABRA1, GABRA2 |
| Afatinib | PubChem | Approved | GABRA1, GABRA2 |
| Apixaban | PubChem | Approved | GABRA1, GABRA2 |
| Binimetinib | PubChem | Approved | GABRA1, GABRA2 |
| chenodiol | PubChem | Approved | GABRA1, GABRA2 |
| Fulvestrant | PubChem | Approved | GABRA1, GABRA2 |
| gentian violet | PubChem | Approved | GABRA1, GABRA2 |
| Imipenem | PubChem | Approved | GABRA1, GABRA2 |
| Lactulose | PubChem | Approved | GABRA1, GABRA2 |
| levocarnitine | PubChem | Approved | GABRA1, GABRA2 |
| podofilox | PubChem | Approved | GABRA1, GABRA2 |
| Propylene Glycol | PubChem | Approved | GABRA1, GABRA2 |
| Pyrazinamide | PubChem | Approved | GABRA1, GABRA2 |
| Pyridoxine | PubChem | Approved | GABRA1, GABRA2 |
| Riociguat | PubChem | Approved | GABRA1, GABRA2 |
| saxagliptin | PubChem | Approved | GABRA1, GABRA2 |
| Thiamine | PubChem | Approved | GABRA1, GABRA2 |
Related Atlas pages
- Genes: GABRA1, GABRA2, GABRA3, GABRA5
- Diseases: insomnia, anxiety, dementia, depressive disorder
- Drugs: Alprazolam, Apalutamide, Brexanolone, Chlordiazepoxide, Clonazepam, Diazepam, Enzalutamide, Flumazenil, Flunitrazepam, Ganaxolone, Liothyronine, Propofol, Eszopiclone, Zolpidem, Crizotinib, Asenapine, Azelastine, Benperidol, Candesartan Cilexetil, Chlorambucil, Clozapine, Epinastine, Etomidate, Glafenine, Simvastatin, Tipranavir, Troglitazone, Zaleplon, Suramin, Tiratricol, Afatinib, Apixaban, Binimetinib, chenodiol, Fulvestrant, Imipenem, Lactulose, levocarnitine, podofilox, Propylene Glycol, Pyrazinamide, Pyridoxine, Riociguat, saxagliptin, Thiamine