3-Ethoxy-1-phenyl-1H-pyrazole-4,5-dione CAS 197652-05-4
| CAS No. | 197652-05-4 |
| Molecular Formula | C11H10N2O3 |
| Molecular Weight | 218.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-Ethoxy-1-phenyl-1H-pyrazole-4,5-dione under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
3-Ethoxy-1-phenyl-1H-pyrazole-4,5-dione (CAS 197652-05-4) is a high-purity analytical reference standard with the molecular formula C11H10N2O3 and a molecular weight of 218.21 g/mol.
3-Ethoxy-1-phenyl-1H-pyrazole-4,5-dione (C11H10N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C11H10N2O3 |
| Molecular Weight | 218.21 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 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2013 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- (2-(Benzo[d][1,3]dioxol-5-yl)oxazol-4-yl)methanamine (CAS 885273-48-3)
- Methyl 4-(5-Methyl-1,2,4-oxadiazol-3-yl)benzoate (CAS 196301-94-7)
- (2-Acetyl-1H-benzimidazol-1-yl)acetic acid (CAS 897773-71-6)
- 5-Amino-2,3-dihydrospiro[indene-1,5'-oxazolidine]-2',4'-dione (CAS 1889287-59-5)
- ((1S)-1-(2-naphthyl)ethyl)methylamine (CAS 885619-30-7)
- 1-(2-Bromoethyl)-4,5-dichloro-1H-imidazole (CAS 1098340-25-0)
- 3,4,2',4',6'- pentamethoxychalcone (CAS 76650-20-9)
- ethyl 6-amino-7-methyl-1,5-naphthyridine-3-carboxylate (CAS 2891456-59-8)
- Tert-butyl (3R,4S)-4-hydroxy-3-(2-methoxy-2-oxoethyl)piperidine-1-carboxylate (CAS 1903429-83-3)
- 1-Cyclopentylpiperidine-3-carboxylic acid (CAS 897094-36-9)
- 4-Mercapto-4-methylpentanoic Acid (CAS 140231-31-8)
- Varenicline Metadinitro (CAS 853946-18-6)
- 3-Methylpentanoyl 3-methylpentanoate (CAS 17612-08-7)
- Semaglutide Impurity 7 (CAS CATO-C4X-22267)
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 18665070610 / Nicole.chen@cato-chem.com