3-Chloro-1-(chloromethyl)-1H-1,2,4-triazole CAS 157395-52-3
| CAS No. | 157395-52-3 |
| Molecular Formula | C3H3Cl2N3 |
| Molecular Weight | 151.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 151.98 g/mol gives 3-Chloro-1-(chloromethyl)-1H-1,2,4-triazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Chloro-1-(chloromethyl)-1H-1,2,4-triazole (CAS 157395-52-3), molecular formula C3H3Cl2N3 and molecular weight 151.98 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, chlorine substitution, 3-Chloro-1-(chloromethyl)-1H-1,2,4-triazole is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 151.98 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C3H3Cl2N3 |
| Molecular Weight | 151.98 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 2001 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 3,5-Dichloro-4-methyl-4H-1,2,4-triazole (CAS 171253-97-7)
- 1346598-24-0 Ethyl-d5-phosphonic Dichloride (CAS 1346598-24-0)
- Thieno[2,3-d][1,2,3]diazaborinin-1(2H)-ol (CAS 17303-84-3)
- Eu Standard Solution (CAS 7440-53-1)
- 1-(Chroman-8-yl)-N-methylmethanamine (CAS 1048970-16-6)
- 2,5-Difluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid (CAS 1383968-46-4)
- 2-(3-Methyl-2,6-dioxo-8-(piperazin-1-yl)-1,2,3,6-tetrahydro-7H-purin-7-yl)acetamide (CAS 477333-71-4)
- 3-Chloro-4-fluoro-N-((1-methyl-1h-imidazol-5-yl)methyl)aniline (CAS 1384738-78-6)
- 2-Methyl-4,5,6,7-tetrahydro-1H-indol-4-ol (CAS 1249195-13-8)
- (1R,2S)-1,2-Diphenyl-2-(3-phenylureido)ethyl 2-(diphenylphosphino)benzoate (CAS 2920833-55-0)
- 2-(2,3-Dimethylphenyl)-2-methylpropanoic acid (CAS 860390-08-5)
- 4-(tert-Butyl)-6-methylpyridin-2-amine (CAS 908271-20-5)
- Benzhydryl (2S,3R,5R)-3-(hydroxymethyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate (CAS 162514-96-7)
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