7-Chloro-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-amine CAS 99951-68-5
| CAS No. | 99951-68-5 |
| Molecular Formula | C6H6ClN5 |
| Molecular Weight | 183.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Chloro-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-amine (CAS 99951-68-5), molecular formula C6H6ClN5 and molecular weight 183.60 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H6ClN5, 7-Chloro-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-amine contains a nitrile group, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 183.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 7-Chloro-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-amine 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 | C6H6ClN5 |
| Molecular Weight | 183.60 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.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Chloro Standards
- 3-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-6-amine (CAS 100367-42-8)
- 4-Chloro-3,6-dimethylisoxazolo[5,4-d]pyrimidine (CAS 1023758-00-0)
- (6-Chloro-7H-purin-8-yl)methanamine (CAS 1044770-59-3)
- 7-Chloro-5-methoxy-1H-benzo[d][1,2,3]triazole (CAS 1086836-89-6)
- 6-Chloro-3-methyl-1H-pyrazolo[4,3-c]pyridin-4(5H)-one (CAS 120422-89-1)
- 2-Chloro-8-methoxy-[1,2,4]triazolo[1,5-a]pyridine (CAS 1207970-17-9)
- 4-Chloro-5-methyl-5H-pyrrolo[2,3-d]pyrimidin-6(7H)-one (CAS 1226804-06-3)
- 2-Chloro-4-hydrazinyl-5H-pyrrolo[2,3-d]pyrimidine (CAS 1260667-61-5)
Recommended Standards
- 7-Chloro-5-methoxyimidazo[1,2-c]pyrimidine (CAS 96225-61-5)
- 8-(Chloromethyl)-1H-purin-6-amine (CAS 317337-02-3)
- 7-Chloro-3,4-dihydro-2H-pyrimido[1,2-b]pyridazin-2-one (CAS 24439-16-5)
- 8-Amino-6-chloro-3-methyl-[1,2,4]triazolo[4,3-b]pyridazine (CAS 53085-52-2)
- 4-(Difluoromethyl)-6-methoxy-5-methylnicotinamide (CAS 1806862-68-9)
- 4-Fluoro-N-methyl-N′-[1-(1-methylethyl)-1H-pyrazol-5-yl]benzenecarboximidamide (CAS 1006463-55-3)
- 2-((5-Amino-4-phenylthiazol-2-yl)thio)acetamide (CAS 1021223-06-2)
- (Z)-{1-[3-(2,3-dihydro-1H-isoindol-2-yl)phenyl]ethylidene}({[4-(trifluoromethyl)phenyl]methoxy})amine (CAS 861207-23-0)
- 2-Chloro-6-(4-fluorophenyl)pyrazine (CAS 1273550-42-7)
- 1-(2-(Methylsulfonyl)cyclopropyl)-4-nitrobenzene (CAS 1708317-28-5)
- O-Benzyl-3-methyl-L-tyrosine (CAS 1956436-10-4)
- 2-((5-Methyl-6-(methylthio)pyridazin-3-yl)amino)ethanol (CAS 185029-16-7)
- 3,3-Dimethyl-1-oxa-6-azaspiro[3.3]heptane (CAS 1073234-27-1)
- Semaglutide impurity 259 (CAS CATO-C4X-2226259)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com