3-Chloro-5-isopropyl-1H-1,2,4-triazole CAS 54671-65-7
| CAS No. | 54671-65-7 |
| Molecular Formula | C5H8ClN3 |
| Molecular Weight | 145.59 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.
3-Chloro-5-isopropyl-1H-1,2,4-triazole (CAS 54671-65-7), molecular formula C5H8ClN3 and molecular weight 145.59 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, chlorine substitution, 3-Chloro-5-isopropyl-1H-1,2,4-triazole is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 145.59 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 3-Chloro-5-isopropyl-1H-1,2,4-triazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H8ClN3 |
| Molecular Weight | 145.59 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.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- (4-Chloro-1-methyl-1h-pyrazol-5-yl)methanamine (CAS 1001500-75-9)
- 4-Chloro-1,5-dimethyl-1h-pyrazol-3-amine (CAS 1006320-25-7)
- 4-Chloro-1-ethyl-1,2-dihydro-3h-pyrazol-3-imine (CAS 1006333-30-7)
- 4-Chloro-1,3-dimethyl-1H-pyrazol-5-amine (CAS 1006481-77-1)
- 2-chloro-N-(prop-2-yn-1-yl)propanamide (CAS 1016727-29-9)
- (4-Chloro-1-methyl-1h-pyrazol-3-yl)methanamine (CAS 1017785-44-2)
- 2-Chloro-5-isopropyloxazole (CAS 1060816-24-1)
- 4-Chloro-5-ethyl-1H-pyrazol-3-amine (CAS 110580-33-1)
Recommended Standards
- 3-(Chloromethyl)-4-ethyl-4H-1,2,4-triazole (CAS 769115-51-7)
- 4-(Chloromethyl)-2,5-dimethyl-1,3-oxazole (CAS 777823-76-4)
- 3-(Chloromethyl)-4,5-dimethyl-4H-1,2,4-triazole (CAS 881845-16-5)
- 4-chloro-2,2-dimethyl-3-oxo-butanenitrile (CAS 2452342-44-6)
- 1-Ethyl-5-(trifluoromethyl)-1H-pyrazole (CAS 1392274-30-4)
- Fmoc-5-methoxy-2-methyl-DL-tryptophan (CAS 1219357-78-4)
- [(5-Ethyl-1,3,4-oxadiazol-2-yl)thio]acetic acid hydrate (CAS 1609404-21-8)
- 3-(4-Nitrophenyl)-5-((phenylselanyl)methyl)-4,5-dihydroisoxazole (CAS 833462-36-5)
- Ethyl 3,5-Dichloro-4-hydroxybenzoate (CAS 17302-82-8)
- 7-Hydroxyspiro[2.5]oct-6-en-5-one (CAS 1423046-30-3)
- S-(5-Chloro-2-methoxyphenyl) ethanethioate (CAS 1378874-08-8)
- 3,6-Dihydroxy-2-methoxybenzoic acid (CAS 118303-91-6)
- (1-(2-Bromobenzyl)piperidin-4-yl)methanamine dihydrochloride (CAS 1286275-88-4)
- Des-Ile17-Tirzepatide (CAS CATO-CPTD788956)
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