1-(4-Ethoxyphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid CAS 1264046-37-8
| CAS No. | 1264046-37-8 |
| Molecular Formula | C18H18N2O3 |
| Molecular Weight | 310.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(4-Ethoxyphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid (CAS 1264046-37-8), molecular formula C18H18N2O3 and molecular weight 310.35 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 1-(4-Ethoxyphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 310.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 1-(4-Ethoxyphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid 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.
Physical & Chemical Properties
| Molecular Formula | C18H18N2O3 |
| Molecular Weight | 310.35 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
Related Ethoxyphenyl Standards
- N4-(4-Ethoxyphenyl)-N2-(2-hydroxypropyl)-L-asparagine (CAS 1048002-41-0)
- N-(2-Ethoxyphenyl)-2-(2-mercapto-4-oxo-4,5-dihydro-1,3-thiazol-5-yl)acetamide (CAS 1142206-84-5)
- N-(4-Ethoxyphenyl)-2-(2-mercapto-4-oxo-4,5-dihydro-1,3-thiazol-5-yl)acetamide (CAS 1142206-85-6)
- 1-(2-Ethoxyphenyl)-5-(pyridin-2-yl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1326844-76-1)
- 1-(4-Ethoxyphenyl)-5-(pyridin-2-yl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1326857-98-0)
- 1-(2-Ethoxyphenyl)-5-(pyridin-4-yl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1326911-79-8)
- 1-(4-Ethoxyphenyl)-5-(pyridin-3-yl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1329787-31-6)
- N-(4-ethoxyphenyl)-6-nitroquinazolin-4-amine (CAS 51687-12-8)
Recommended Standards
- 3-(4-Isopropylbenzyl)-6-methylisoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1263210-47-4)
- Ethyl 8-cyano-4-(piperazin-1-yl)quinoline-3-carboxylate (CAS 1279214-94-6)
- 6-(4-(Piperidine-1-carbonyl)phenyl)picolinic acid (CAS 1261922-93-3)
- 6-Hydroxy Alosetron HCl (CAS 128486-89-5)
- 1-Cyclohexyl-5-nitro-1H-indazol-3-amine (CAS 1133430-68-8)
- 3-Methoxyphenyl 2-(2-piperidinyl)ethyl ether (CAS 946682-04-8)
- 8-Fluoro-2,3-dihydro-4H-pyrano[3,2-b]pyridin-4-one (CAS 1561782-07-7)
- (2R,3R,4S,5R)-2-(hexadecyloxy)tetrahydro-2H-pyran-3,4,5-triol (CAS 115211-19-3)
- 1-(4-Fluoro-2-isopropoxyphenyl)ethan-1-amine (CAS 1341040-93-4)
- 4,5-Dibromothiazole-2-carboxylic acid (CAS 1806352-39-5)
- Micafungin Impurity 8 (CAS CATO-C4X-16958)
- Boc-3S,4R -trans-4-phenyl-beta- Proline (CAS 884048-45-7)
- N-(2-nitrophenyl)pyridin-3-amine (CAS 5024-63-5)
- (D-Ala1)-Peptide T amide (CAS 106362-34-9)
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