2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl furan-2-carboxylate CAS 956326-47-9
| CAS No. | 956326-47-9 |
| Molecular Formula | C21H13ClN2O4 |
| Molecular Weight | 392.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl furan-2-carboxylate.
2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl furan-2-carboxylate (CAS 956326-47-9) is a high-purity analytical reference standard with the molecular formula C21H13ClN2O4 and a molecular weight of 392.79 g/mol.
Based on its molecular formula C21H13ClN2O4, 2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl furan-2-carboxylate contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 392.79 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 2-[1-(4-Chlorophenyl)-1H-pyrazole-4-carbonyl]phenyl furan-2-carboxylate 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 | C21H13ClN2O4 |
| Molecular Weight | 392.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 6-(4-Chlorophenyl)-1-(3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-3-methyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one (CAS 89889-80-5)
- N-(4-chlorophenyl)-3-(4-fluoro-2-nitrophenoxy)thiophene-2-carboxamide (CAS 303152-71-8)
- N-(4-chlorophenyl)-4-(4-fluoro-5-methyl-2-nitrophenyl)piperazine-1-carboxamide (CAS 1262222-58-1)
- (E)-2-[(4-chlorophenyl)sulfonyl]-3-(6-nitro-1,3-benzodioxol-5-yl)-2-propenenitrile (CAS 929982-16-1)
- 2-(4-Chlorophenyl)-1-{[3-(trifluoromethyl)phenyl]methanesulfonyl}propan-2-ol (CAS 339276-81-2)
- N-[(4-Chlorophenyl)methyl]-2,7-dimethyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxamide (CAS 338751-40-9)
- 1-[(4-Chlorophenyl)methyl]-3-{2-[(4-fluorophenyl)methoxy]phenyl}-1H-pyrazole (CAS 477713-50-1)
- 2-((4-Chlorophenyl)sulfinyl)-1,1-bis(4-fluorophenyl)ethanol (CAS 303152-28-5)
Recommended Standards
- 4'-[(2-Chloro-5-Methylphenyl)Sulfonylamino]-2,2,2-Trifluoroacetanilide (CAS 64058-75-9)
- 3-Chloro-N-({3-[5-(methylamino)-1,3,4-thiadiazol-2-yl]-4,5-dihydro-1,2-oxazol-5-yl}methyl)-5-(trifluoromethyl)pyridin-2-amine (CAS 477867-49-5)
- 1-Decene, polymer with 1-octene, hydrogenated (CAS 66070-54-0)
- 5-(5-(((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)amino)methyl)-4,5-dihydroisoxazol-3-yl)-4-methyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 400082-28-2)
- 1-Allyl-2-methyl-1H-imidazole (CAS 13173-22-3)
- 3,4-Difluoro-5-nitrobenzenesulfonamide (CAS 1803826-57-4)
- 4-Fluoro-N-(2-(methylsulfonamido)ethyl)benzamide (CAS 890868-99-2)
- 2-Phenyl-1,2-benzoselenazol-3-one (CAS 60940-34-3)
- (2E)-3-(5-ethylfuran-2-yl)prop-2-enoic acid (CAS 1310567-98-6)
- 4,4'-Diisothiocyano-2,2'-dihydrostilbenedisulfonic Acid (CAS 61481-03-6)
- 1-((4-Chloro-1h-pyrazol-1-yl)methyl)-5-methyl-1,2-dihydro-3h-pyrazol-3-imine (CAS 1006333-16-9)
- 5-(2-Chlorophenyl)-1-(4-methylphenyl)-1H-pyrazole-3-carboxylic acid (CAS 477713-28-3)
- methyl 1-ethyl-1H-imidazole-5-carboxylate (CAS 71925-10-5)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
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