5-Chloro-3-cyclopropyl-1H-1,2,4-triazole CAS 1279219-26-9
| CAS No. | 1279219-26-9 |
| Molecular Formula | C5H6ClN3 |
| Molecular Weight | 143.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Chloro-3-cyclopropyl-1H-1,2,4-triazole (CAS 1279219-26-9), molecular formula C5H6ClN3 and molecular weight 143.57 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H6ClN3, 5-Chloro-3-cyclopropyl-1H-1,2,4-triazole contains a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 143.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C5H6ClN3 |
| Molecular Weight | 143.57 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
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- N-(3-Chloro-phenyl)hydroxylamine (CAS 10468-17-4)
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- 4-Chloro-3-methylpyridine 1-Oxide (CAS 1073-34-3)
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- 3-Chloro-2-methylpyridin-4-ol (CAS 1227499-23-1)
Recommended Standards
- 4-Chloro-5-hydroxy-2-methylpyridine (CAS 1261811-68-0)
- 3-Chloro-5-hydrazinylpyridine (CAS 1289121-90-9)
- 3-Chloro-5-methylpyridin-2(1H)-one (CAS 1261634-82-5)
- 5-Chloro-6-methylpyrimidin-4-amine (CAS 13040-89-6)
- 1-Chloro-1-phenyl-propan-2-one (CAS 4773-35-7)
- 1-benzyl-2-ethyl-4,6-diphenylpyridinium tetrafluoroborate (CAS 828940-79-0)
- 4-Hydrazinyl-N,N-dimethylbenzamide (CAS 806634-16-2)
- tert-butyl (4-iodocyclohexyl)carbamate (CAS 1204401-31-9)
- 1-(diethoxymethoxy)-4-methylbenzene (CAS 25604-53-9)
- 4-(Prop-2-en-1-yl)-5-(pyrazin-2-yl)-4h-1,2,4-triazole-3-thiol (CAS 98010-71-0)
- (Z)-3-Methyl-5-(4-((R)-2-((R)-4-methyl-5-oxo-2,5-dihydrofuran-2-yl)pyrrolidin-1-yl)butylidene)furan-2(5H)-one (CAS 303008-80-2)
- N-(2-(piperidin-4-yl)ethyl)propan-2-amine (CAS 804427-90-5)
- 4-(chloromethyl)-2-(5-methyl-2-furyl)-1,3-thiazole (CAS 1087784-63-1)
- Palmitoyl Hexapeptide-12 TFA salt (CAS 171263-26-6(Free Base))
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