4-Chloro-2-methyl-2H-1,2,3-triazole CAS 109299-74-3
| CAS No. | 109299-74-3 |
| Molecular Formula | C3H4ClN3 |
| Molecular Weight | 117.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrile group, chlorine substitution, 4-Chloro-2-methyl-2H-1,2,3-triazole is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 117.54 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
4-Chloro-2-methyl-2H-1,2,3-triazole (CAS 109299-74-3) is a high-purity analytical reference standard with the molecular formula C3H4ClN3 and a molecular weight of 117.54 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C3H4ClN3 |
| Molecular Weight | 117.54 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 2-Methyl-4-nitro-2H-1,2,3-triazole (CAS 107945-73-3)
- 1-Chloromethyl-1H-1,2,4-triazole (CAS 84387-62-2)
- 5-(Chloromethyl)-1,2-oxazole (CAS 57777-33-0)
- 2-(chloromethyl)-2H-1,2,3-triazole (CAS 80199-90-2)
- N-Hydroxy-4-(6-methyl-1H-benzo[d]imidazol-2-yl)benzimidamide (CAS 1256486-22-2)
- 3-(Difluoromethyl)-6-formyl-4-hydroxypicolinonitrile (CAS 1806986-87-7)
- Methyl 5-cyano-2-methyl-6-(phenylsulfanyl)nicotinate (CAS 303146-42-1)
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- 7'-Benzyl-6'-methyl-3',4'-dihydro-8'H-spiro[cyclohexane-1,2'-pyrano[3,2-g]chromene]-8'-thione (CAS 1014087-16-1)
- N-Benzyloxycarbonyl-4-[(3R)-3-amino-1-oxo-4-(phenylthio)butyl]morpholine (CAS 870812-93-4)
- 2-Cyano-N-(4-phenyl-1,3-thiazol-2-yl)acetamide (CAS 31557-89-8)
- Citalopram (CAS 59729-33-8)
- Asenapine Impurity 7 (CAS 70958-18-8)
- Semaglutide Impurity 12 (CAS CATO-C4X-222612)
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