3,5,7-Trichloro-2H-pyrazolo[4,3-d]pyrimidine CAS 1823950-59-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1823950-59-9 |
| Molecular Formula | C5HCl3N4 |
| Molecular Weight | 223.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5,7-Trichloro-2H-pyrazolo[4,3-d]pyrimidine (CAS 1823950-59-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5HCl3N4. Molecular weight: 223.45 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5HCl3N4 |
| Molecular Weight | 223.45 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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 |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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- 2,6,8-Trichloro-7H-purine (CAS 2562-52-9)
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Recommended Standards
- 3-Bromo-5-chlorobenzene-1,2-diol (CAS 180995-18-0)
- 1H-Pyrazolo[3,4-d]pyrimidine, 3,4,6-trichloro-3,4,6-trichloro-1H-pyrazolo[3,4-d]pyrimidine (CAS 1936344-23-8)
- 2-Bromo-6-chlorobenzene-1,4-diol (CAS 150900-92-8)
- 1-tert-Butyl 4-methyl piperazine-1,4-dicarboxylate (CAS 219509-79-2)
- [(1Z,3E)-2-(4-Chlorobenzenesulfonyl)-4-phenylbuta-1,3-dien-1-yl]dimethylamine (CAS 338777-70-1)
- (1S,3S,4S)-2-(tert-butoxycarbonyl)-2-azabicyclo[2.2.1]Heptane-3-carboxylic acid (CAS 1932212-21-9)
- 2-(5-Fluoro-2-nitrophenoxy)acetic acid (CAS 396-03-2)
- (9H-fluoren-9-yl)methyl 4-aminoazepane-1-carboxylate (CAS 885954-48-3)
- 3-Amino-2-((dimethylamino)methyl)-1-phenylpropan-1-ol (CAS 1087784-24-4)
- Semaglutide impurity 42 (CAS CATO-C4X-222642)
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