3-chloro-1-methyl-1H-1,2,4-triazole-5-carboxylic acid CAS 1781676-47-8
| CAS No. | 1781676-47-8 |
| Molecular Formula | C4H8ClN3O2 |
| Molecular Weight | 165.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-chloro-1-methyl-1H-1,2,4-triazole-5-carboxylic acid.
CATO supplies 3-chloro-1-methyl-1H-1,2,4-triazole-5-carboxylic acid (CAS 1781676-47-8), a certified reference material (molecular formula C4H8ClN3O2, MW 165.58 g/mol) for analytical method development and quality control.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 3-chloro-1-methyl-1H-1,2,4-triazole-5-carboxylic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 165.58 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.
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 | C4H8ClN3O2 |
| Molecular Weight | 165.58 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chloro Standards
- 2-Chloro-4-formylbenzonitrile (CAS 101048-77-5)
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- 3-Chloro-2-formylbenzonitrile (CAS 1256561-76-8)
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Recommended Standards
- 3-cyanobenzoyl chloride (CAS 1711-11-1)
- 7-Chloropyrido[2,3-d]pyrimidine (CAS 1784786-61-3)
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- 1-Chloropyrido[3,4-d]pyridazine (CAS 162022-92-6)
- (6-Methoxy-4-(trifluoromethyl)pyridin-3-yl)methanamine (CAS 1256791-10-2)
- 2-Phenyl-5-(pentafluorosulfanyl)benzooxazole (CAS 1379812-18-6)
- 4-Isopropoxy-3,5-dimethoxybenzonitrile (CAS 1219828-05-3)
- 2-Chloro-1-[2-(thiophen-2-yl)pyrrolidin-1-yl]ethan-1-one (CAS 875160-60-4)
- (2R)-2-cyclopropanesulfonamido-3-methylbutanoic acid hydrochloride (CAS 1807914-36-8)
- Propyl 2-hydroxy-5-iodobenzoate (CAS 15125-86-7)
- Methyl (S)-1-methyl-4,5,6,7-tetrahydro-1H-imidazo[4,5-c]pyridine-6-carboxylate hydrochloride (CAS 2089671-43-0)
- 2-(4-Aminophenyl)-1lambda6,2-thiazinane-1,1-dione (CAS 37441-49-9)
- Methyl 3-(naphthalen-2-yl)prop-2-ynoate (CAS 887572-51-2)
- Endo-[Glu]31-Liraglutide (CAS CATO-C4X-199234)
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