1-(2,4-Difluorophenyl)ethyl 1H-pyrazole-4-carboxylate CAS 138907-77-4
| CAS No. | 138907-77-4 |
| Molecular Formula | C12H10F2N2O2 |
| Molecular Weight | 252.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C12H10F2N2O2, 1-(2,4-Difluorophenyl)ethyl 1H-pyrazole-4-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 252.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 1-(2,4-Difluorophenyl)ethyl 1H-pyrazole-4-carboxylate (CAS 138907-77-4), a certified reference material (molecular formula C12H10F2N2O2, MW 252.22 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H10F2N2O2 |
| Molecular Weight | 252.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Difluorophenyl Standards
- 1-(2,4-Difluorophenyl)-3,5-dimethyl-1h-pyrazole-4-carboxylic acid (CAS 1052558-50-5)
- Ethyl 5-(3,4-difluorophenyl)-1H-pyrazole-3-carboxylate (CAS 1187635-57-9)
- 3-(3,4-Difluorophenyl)-N-(4h-1,2,4-triazol-3-yl)propanamide (CAS 1211189-74-0)
- 1-Ethyl-3-(2,4-difluorophenyl)-1H-pyrazole-5-carboxylic acid (CAS 1369018-01-8)
- 2-(2,6-Difluorophenyl)-4,6-dimethoxypyrimidine (CAS 402497-50-1)
- n-(2,4-Difluorophenyl)-3,5-dimethylisoxazole-4-carboxamide (CAS 478031-58-2)
- N-(3,4-difluorophenyl)-3,5-dimethylisoxazole-4-carboxamide (CAS 478031-33-3)
- 4-(3,4-Difluorophenyl)-2-fluorobenzoic acid (CAS 1179174-66-3)
Recommended Standards
- 5-(difluoromethyl)-3-methyl-1-phenyl-1H-pyrazole-4-carboxylic acid (CAS 1375473-55-4)
- 3-[(Morpholin-4-yl)carbonyl]-5-nitrophenol (CAS 1394954-54-1)
- 2-(4-Hydroxy-3-methoxyphenyl)-5-oxotetrahydrofuran-3-carboxylic acid (CAS 1399663-39-8)
- ethyl 2-[(6-formyl-2H-1,3-benzodioxol-5-yl)oxy]acetate (CAS 13668-86-5)
- 1-Bromopropane-2,2,3,3,3-d5 (CAS 61066-67-9)
- Dichloro[N-[2-(phenylthio-κS)ethyl]-[4-morpholineethanamine-κNN1,κN1](tricyclohexylphosphine)ruthenium(II) (CAS 1799787-22-6)
- 7-Oxo-5,6,7,8-tetrahydro-1,8-naphthyridine-3-carbaldehyde (CAS 443956-57-8)
- Betamethasone Impurity 9 (CAS 2597-76-4)
- Ethyl 4-ethoxy-2-methylpyrimidine-5-carboxylate (CAS 7389-16-4)
- 1-Hexyl-1,2,3,4-tetrahydroquinoline-6-carbaldehyde (CAS 593281-04-0)
- 1,5-Dichloro-9,10-diphenylanthracene (CAS 80034-46-4)
- 4H,5H-[1,2,4]triazolo[1,5-a]quinazolin-5-one (CAS 73549-68-5)
- 5-Chloro-6-methylbenzo[c][1,2,5]thiadiazole (CAS 50636-02-7)
- Des-Ser39-Tirzepatide (CAS CATO-CPTD788936)
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