2H-Pyrazolo[4,3-d]pyrimidine CAS 272-55-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 272-55-9 |
| Molecular Formula | C5H4N4 |
| Molecular Weight | 120.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2H-Pyrazolo[4,3-d]pyrimidine (CAS 272-55-9) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C5H4N4. Molecular weight: 120.11 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C5H4N4 |
| Molecular Weight | 120.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 4 |
Related H Standards
- 1H-Pyrazolo[3,4-b]pyrazine (CAS 272-60-6)
- 1H-Pyrazolo[3,4-c]pyridazine (CAS 271-75-0)
- 1H-Pyrazolo[3,4-d]pyridazine (CAS 271-55-6)
- 2H-Pyrazolo[3,4-b]pyrazine (CAS 24977-38-6)
- 2H-Pyrazolo[3,4-d]pyrimidine (CAS 271-78-3)
- 3H-Pyrazolo[3,4-d]pyrimidine (CAS 271-79-4)
- 4H-Pyrazolo[3,4-d]pyrimidine (CAS 271-76-1)
- 7H-Pyrazolo[3,4-b]pyrazine (CAS 399-62-2)
Recommended Standards
- 2-Hydroxy-3-cyanopyridine (CAS 20577-27-9)
- 2-Hydroxyethyl hydrazinecarboxylate (CAS 4341-20-2)
- 2H-[1,2,3]Triazolo[4,5-b]pyridine (CAS 273-33-6)
- (2S,4S)-tert-Butyl 2-(hydroxymethyl)-4-methoxypyrrolidine-1-carboxylate (CAS 215918-39-1)
- 2,4-Dichloro-6,6-dimethyl-8,9-dihydro-6H-[1,4]oxazino[4,3-e]purine (CAS 1382981-73-8)
- 4-Hydroxy-3-pyridinesulfonic Acid (CAS 51498-37-4)
- 4-Methylquinolin-5-amine (CAS 65079-18-7)
- Hexyl (5-thioxo-4,5-dihydro-1,3,4-thiadiazol-2-yl)carbamate (CAS 99063-90-8)
- 2-(6-Chloropyridin-3-yl)-1-(4-methylbenzyl)-1H-benzo[d]imidazole (CAS 339112-79-7)
- Acetyl Hexapeptide-39 (CAS 1382088-38-1)
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