3-Bromo-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one CAS 20419-67-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 20419-67-4 |
| Molecular Formula | C5H3BrN4O |
| Molecular Weight | 215.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Bromo-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one (CAS 20419-67-4) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C5H3BrN4O. Molecular weight: 215.01 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C5H3BrN4O |
| Molecular Weight | 215.01 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 |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
Related Bromo Standards
- 5-(5-bromo-2-furyl)-1H-tetrazole (CAS 121745-85-5)
- 5-Bromo-1H-imidazo[4,5-b]pyrazin-2(3H)-one (CAS 1260763-85-6)
- 8-Bromo-1H,4H-pyrazolo[1,5-a][1,3,5]triazin-4-one (CAS 1370008-37-9)
- 2-Bromo-[1,2,4]triazolo[1,5-a]pyrimidin-5(1H)-one (CAS 2750605-36-6)
- 3-Bromo-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one (CAS 54738-73-7)
- 5-(4-Bromo-1h-pyrazol-1-yl)-1h-tetrazole (CAS 496918-93-5)
- 6-Bromo-[1,2,4]triazolo[1,5-a]pyrimidin-7-ol (CAS 56892-17-2)
- 6-Bromo-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one (CAS 96555-35-0)
Recommended Standards
- (5-Phenoxypyridin-3-yl)boronic acid (CAS 850991-33-2)
- 7-Bromoimidazo[5,1-f][1,2,4]triazin-4(1H)-one (CAS 1779924-85-4)
- 8-Bromo-1H-pyrazolo[1,5-a][1,3,5]triazin-2-one (CAS 2140305-67-3)
- diethyl 5-bromopyrazolo[1,5-a]pyridine-2,3-dicarboxylate (CAS 2809036-35-7)
- 4-((5-Chloro-4-(methylamino)pyrimidin-2-yl)amino)-3-cyclobutoxybenzoic acid (CAS 1351762-30-5)
- Regorafenib Impurity 79 (CAS CATO-C4X-104779)
- Sulfisoxazole-13C6 (CAS 1334378-46-9)
- 3-Phenylpyrazolo[1,5-a]pyrimidine (CAS 394208-27-6)
- 4-(Piperidin-4-yloxy)benzaldehyde (CAS 199103-27-0)
- Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 75976-10-2)
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 13829788188 / jacky.chen@cato-chem.com