3,5-Diethyl 1-[2-(4-methylphenyl)-2-oxoethyl]-1H-pyrazole-3,5-dicarboxylate CAS 1638612-88-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1638612-88-0 |
| Molecular Formula | C18H20N2O5 |
| Molecular Weight | 344.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Diethyl 1-[2-(4-methylphenyl)-2-oxoethyl]-1H-pyrazole-3,5-dicarboxylate (CAS 1638612-88-0) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C18H20N2O5. Molecular weight: 344.36 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C18H20N2O5 |
| Molecular Weight | 344.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- (R)-1-(5,8-Dihydroxy-1,4-dioxo-1,4-dihydronaphthalen-2-yl)-4-methylpent-3-en-1-yl propionate (CAS 162283-70-7)
- 2-(3,4-Dimethoxyphenyl)-5,7-dimethoxychroman-4-one (CAS 17060-20-7)
- 1,4-Diamino-2-(4-methoxyphenyl)anthracene-9,10-dione (CAS 1573-83-7)
- 2-(2-Amino-4-(pentafluoro-λ6-sulfanyl)phenyl)acetonitrile (CAS 1379811-96-7)
- (3S,4R)-3-amino-4-methylhexanoic acid (CAS 446259-39-8)
- 2-(3-Cyanobenzoyl)-6-methoxypyridine (CAS 1187171-31-8)
- CAS CATO-C3D-262678 (CAS CATO-C3D-262678)
- N,N-diallylcyanamide (CAS 538-08-9)
- tert-Butyl 4-(4-{[(4,5-dibromo-1H-pyrrol-2-yl)formamido]methyl}phenyl)piperazine-1-carboxylate (CAS 860648-73-3)
- Semaglutide Impurity 188 (CAS CATO-C4X-2226188)
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