5-chloro-7-methyl-[1,2,4]triazolo[4,3-c]pyrimidine CAS 56881-37-9
| CAS No. | 56881-37-9 |
| Molecular Formula | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-chloro-7-methyl-[1,2,4]triazolo[4,3-c]pyrimidine (CAS 56881-37-9) is a high-purity analytical reference standard with the molecular formula C6H5ClN4 and a molecular weight of 168.58 g/mol.
The molecular framework of 5-chloro-7-methyl-[1,2,4]triazolo[4,3-c]pyrimidine (C6H5ClN4) is characterized by a nitrile group, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-chloro-7-methyl-[1,2,4]triazolo[4,3-c]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 | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related chloro Standards
- 6-Chloro-1H-pyrrolo[3,2-c]pyridin-2(3H)-one (CAS 1000342-80-2)
- 4-Chloro-2-methoxypyridine-3-carbonitrile (CAS 1008451-56-6)
- 6-Chloro-2-methyl-9H-purine (CAS 100859-35-6)
- 3-chloro-6-methyl-[1,2,4]triazolo[4,3-a]pyrimidine (CAS 1019033-24-9)
- 2-Chloro-8-methyl-9H-purine (CAS 1023813-16-2)
- 2-Chloro-5-methylfuro[2,3-d]pyrimidine (CAS 1030377-49-1)
- 7-chloro-5-methyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 1055057-37-8)
- 2-Chloro-6-hydrazinylpyridine-4-carbonitrile (CAS 107445-56-7)
Recommended Standards
- 5-chloro-7-methyl-[1,2,4]triazolo[1,5-c]pyrimidine (CAS 72411-32-6)
- 5-chloro-7-methyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 2792138-64-6)
- 5-Chloro-6-methylbenzo[c][1,2,5]oxadiazole (CAS 50636-01-6)
- 5-Chlorobenzimidazol-2(3H)-one (CAS 2034-23-3)
- 2-Methyl-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid hydrobromide (CAS 1881288-21-6)
- 2,2,6,6-Tetramethylpiperidine (CAS 768-66-1)
- 1-Methyl-N-(1-(5-methylthiophen-2-yl)ethyl)-1h-pyrazol-3-amine (CAS 1179963-99-5)
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- 3,6-Dimethoxy-2-nitrobenzoic acid, 97% (CAS 50472-09-8)
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- 2-(4-Ethylphenyl)-2-(methylamino)acetonitrile (CAS 1018281-34-9)
- 2-(Difluoromethyl)-4,5-diiodo-3-methoxypyridine (CAS 1805330-98-6)
- Palmitoyl Tetrapeptide-7 (CAS 221227-05-0)
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