Ethyl 7-hydroxy-5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate CAS 90349-67-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 90349-67-0 |
| Molecular Formula | C9H9N3O4 |
| Molecular Weight | 223.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ethyl 7-hydroxy-5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 90349-67-0), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C9H9N3O4. Molecular weight: 223.19 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C9H9N3O4 |
| Molecular Weight | 223.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 3 |
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Recommended Standards
- Ethyl 2,4-dioxo-1H,2H,3H,4H-pyrrolo[1,2-a][1,3,5]triazine-7-carboxylate (CAS 54449-89-7)
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- 6-Ethyl-3-methyl-7-oxo-6,7-dihydroisoxazolo[3,4-d]pyridazine-4-carboxylic acid (CAS 720718-58-1)
- (2-aminopropoxy)benzene hydrochloride (CAS 1519-94-4)
- methyl 2-[(3S)-pyrrolidin-3-yl]acetate;hydrochloride (CAS 1024038-33-2)
- 1-((5-Bromo-2-methoxyphenyl)sulfonyl)piperidin-4-ol (CAS 1023242-77-4)
- 3-Benzyl-2,4-dioxo-1,2,3,4-tetrahydroquinazoline-7-carboxylic acid (CAS 687580-04-7)
- Benzyl N-(2-fluoro-4-hydroxyphenyl)carbamate (CAS 1195781-24-8)
- 4-Methyl-3-(thiophene-2-carboxamido)benzoic acid (CAS 313260-44-5)
- Peptide 441 (CAS CATO-CPTD788441)
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