5-chloro-2-methylpyrazolo[1,5-a]pyrimidine CAS 189116-36-7
| CAS No. | 189116-36-7 |
| Molecular Formula | C7H14ClN3 |
| Molecular Weight | 175.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-chloro-2-methylpyrazolo[1,5-a]pyrimidine is closely related to a nitrile group, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-chloro-2-methylpyrazolo[1,5-a]pyrimidine (CAS 189116-36-7), a certified reference material (molecular formula C7H14ClN3, MW 175.66 g/mol) for analytical method development and quality control.
Owing to a nitrile group, chlorine substitution, 5-chloro-2-methylpyrazolo[1,5-a]pyrimidine is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 175.66 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 5-chloro-2-methylpyrazolo[1,5-a]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H14ClN3 |
| Molecular Weight | 175.66 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2011 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chloro Standards
- 5-Chloro-1H-pyrrolo[2,3-b]pyridin-4-amine (CAS 1040683-00-8)
- 7-chloro-1-methyl-pyrazolo[4,3-b]pyridine (CAS 1057672-72-6)
- 2-chloro-6-methyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 1060816-56-9)
- 7-chloro-2-methyl-3H-imidazo[4,5-b]pyridine (CAS 1086423-62-2)
- 2-Chloro-N-cyclopentyl-N-methylacetamide (CAS 1095028-85-5)
- 2-Chloro-N-(cyclopentylmethyl)acetamide (CAS 1096841-92-7)
- 4-chloro-7-methyl-1H-pyrazolo[4,3-c]pyridine (CAS 1159828-57-5)
- 4-chloro-6-methyl-1H-pyrazolo[4,3-c]pyridine (CAS 1159828-70-2)
Recommended Standards
- 4-chloro-7-methyl-1H-imidazo[4,5-c]pyridine (CAS 18232-95-6)
- 5-chloro-2-methyl-pyrazolo[3,4-c]pyridine (CAS 1951466-68-4)
- 4-chloro-6-methyl-1H-pyrazolo[3,4-b]pyridine (CAS 17902-30-6)
- 1-(2-Chloroethyl)-4,4-dimethylpyrrolidin-2-one (CAS 2281688-15-9)
- 2,3,4-Trimethoxyaniline hydrochloride (CAS 860586-41-0)
- 4-(Difluoromethyl)-3-methoxy-6-methylpyridine-2-sulfonyl chloride (CAS 1805261-00-0)
- 4-Nitrobenzoxazole (CAS 163808-13-7)
- Fudosteine Impurity 48 (CAS CATO-C4X-144748)
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- 5-Bromo-2-chloromethylbenzo[d]thiazole, 97% (CAS 110704-49-9)
- 4-Amino-3-chloro-n-methylbenzamide (CAS 408316-92-7)
- 2-(Trifluoromethyl)thiazole-4-sulfonyl chloride (CAS 2137633-02-2)
- 4-Methylcyclohexene-1-boronic Acid Pinacol Ester (CAS 865869-26-7)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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