3-(4-ethoxyphenyl)-1H-pyrazole-5-carboxylic acid CAS 1197631-30-3
| CAS No. | 1197631-30-3 |
| Molecular Formula | C12H22N2O3 |
| Molecular Weight | 242.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-(4-ethoxyphenyl)-1H-pyrazole-5-carboxylic acid (C12H22N2O3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 3-(4-ethoxyphenyl)-1H-pyrazole-5-carboxylic acid (CAS 1197631-30-3), a certified reference material (molecular formula C12H22N2O3, MW 242.31 g/mol) for analytical method development and quality control.
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.
As a certified reference material (CRM), 3-(4-ethoxyphenyl)-1H-pyrazole-5-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H22N2O3 |
| Molecular Weight | 242.31 g/mol |
| Appearance | White to pale 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
Related ethoxyphenyl Standards
- 1-(4-Ethoxyphenyl)-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazine (CAS 887201-27-6)
- 3-(2-Ethoxyphenyl)benzoic acid (CAS 1432677-63-8)
- n-(4-Ethoxyphenyl)picolinamide (CAS 14888-39-2)
- (2E)-1-(4-Ethoxyphenyl)-3-(furan-2-yl)prop-2-en-1-one (CAS 1565-91-9)
- (E)-4-((4-Ethoxyphenyl)diazenyl)phenol (CAS 2496-26-6)
- 5-(3-Ethoxyphenyl)nicotinic acid (CAS 1048273-45-5)
- 5-(4-Ethoxyphenyl)nicotinic acid (CAS 1048307-98-7)
- 2-(4-Ethoxyphenyl)isonicotinic acid (CAS 1226063-99-5)
Recommended Standards
- Ethyl 4-(morpholin-4-yl)piperidine-1-carboxylate (CAS 1188331-39-6)
- tert-Butyl (7R,8aS)-7-hydroxy-3,4,6,7,8,8a-hexahydro-1H-pyrrolo[1,2-a]pyrazine-2-carboxylate (CAS 1204603-42-8)
- Ethyl 3-(1,4-Dioxaspiro[4.5]decan-8-yl)propionate (CAS 1187964-14-2)
- 2-(4-Hydroxypiperidin-1-yl)-N-((tetrahydrofuran-2-yl)methyl)acetamide (CAS 1205144-57-5)
- 5-Ethoxy-2-isopropyl-1H-imidazole-4-carbaldehyde (CAS 1984055-22-2)
- Ethyl 3-amino-5-(trifluoromethyl)benzo[b]thiophene-2-carboxylate (CAS 1217018-83-1)
- 4-Methyl-3-(2-methylbenzenesulfonyl)-6-phenyl-1,2-dihydropyridin-2-one (CAS 338964-35-5)
- Ethyl 2-amino-3,4-dichlorobenzoate (CAS 1178486-27-5)
- 1-Bromo-8-(chloromethyl)naphthalene (CAS 19190-48-8)
- N,N'-bis(2,4,6-Trichlorophenyl)urea (CAS 20632-35-3)
- 3-(Propylamino)propanoic acid hydrochloride (CAS 1353504-36-5)
- 3-((Trifluoromethyl)thio)picolinonitrile (CAS 1204234-64-9)
- Ethyl 3-(benzyloxy)-6-fluorobicyclo[3.1.0]hexane-6-carboxylate (CAS 1823316-44-4)
- MOTS-c Peptide (CAS 1627580-64-6)
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