5-chloro-1H-pyrazolo[4,3-d]pyrimidine CAS 633328-98-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 633328-98-0 |
| Molecular Formula | C5H11ClN4 |
| Molecular Weight | 162.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-chloro-1H-pyrazolo[4,3-d]pyrimidine (CAS 633328-98-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H11ClN4. Molecular weight: 162.62 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H11ClN4 |
| Molecular Weight | 162.62 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.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related chloro Standards
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- 5-chloro-2-ethyl-1H-imidazole-4-carbaldehyde (CAS 145824-12-0)
- 4-chloro-2H-pyrazolo[3,4-d]pyrimidine (CAS 1821249-93-7)
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- 5-chloro-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 89364-06-7)
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Recommended Standards
- 4-chlorofuro[2,3-d]pyrimidine (CAS 918340-51-9)
- 6-chloro-[1,2,4]triazolo[1,5-a]pyrazine (CAS 51519-29-0)
- 6-chloro-3H-[1,2,3]triazolo[4,5-b]pyridine (CAS 408314-14-7)
- 4-Cyclopropoxy-3-fluoropyridine (CAS 1243463-48-0)
- 3-Phenyl-3-(trifluoromethyl)diazirine (CAS 73899-14-6)
- DL-Cystine-2,2',3,3,3',3'-d6 (CAS 352431-53-9)
- 5-Hydroxyindole-3-acetic-2,2-d2 Acid (CAS 56209-31-5)
- 2,2,3,3,3-Pentafluoropropyl trifluoromethyl ether (CAS 171182-94-8)
- 1-(2-(2-Hydroxyethoxy)ethyl)-3-(1-methyl-1H-indol-3-yl)urea (CAS 923067-78-1)
- Influenza PR8 Hemagglutinin Peptide (110-119) (H-6312.0005) (CAS 132031-50-6)
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