1-(2,5-Dichlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid CAS 1264050-61-4
| CAS No. | 1264050-61-4 |
| Molecular Formula | C14H14Cl2N2O4 |
| Molecular Weight | 345.18 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 1-(2,5-Dichlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid.
1-(2,5-Dichlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264050-61-4), molecular formula C14H14Cl2N2O4 and molecular weight 345.18 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-(2,5-Dichlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (C14H14Cl2N2O4) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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.
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), 1-(2,5-Dichlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-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 | C14H14Cl2N2O4 |
| Molecular Weight | 345.18 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 |
| 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichlorophenyl Standards
- 1-(3,4-Dichlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264049-70-8)
- 3-(3,4-Dichlorophenyl)-5-methoxy-[1,2,4]triazolo[4,3-c]quinazoline (CAS 338978-01-1)
- 1-(3,5-Dichlorophenyl)-3-[4-(trifluoromethyl)-phenyl]prop-2-en-1-one (CAS 1217201-81-4)
- 5-[(2,4-Dichlorophenyl)methyl]-2-phenylpyrimidine-4,6-diamine (CAS 338965-13-2)
- 1-(3,4-Dichlorophenyl)-2-(4-methylbenzenesulfonyl)ethan-1-ol (CAS 477867-77-9)
- Ethyl 4-(3,4-dichlorophenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 5675-97-8)
- 1-(2,3-Dichlorophenyl)-5-(5,5-dimethyl-1,3-dioxan-2-yl)pentan-1-one (CAS 898756-85-9)
- 1-(2,4-Dichlorophenyl)-5-(5,5-dimethyl-1,3-dioxan-2-yl)pentan-1-one (CAS 898756-90-6)
Recommended Standards
- Benzyl 3-iodopiperidine-1-carboxylate (CAS 1353944-49-6)
- 3-Iodo-1-(4-methoxybenzyl)piperidin-2-one (CAS 1245646-02-9)
- (R)-Benzyl 3-iodopiperidine-1-carboxylate (CAS 1353995-97-7)
- (S)-3-Bromo-pyrrolidine-1-carboxylic acid benzyl ester (CAS 1196044-39-9)
- N-(6-Bromo-3-ethylbenzo[d]thiazol-2(3H)-ylidene)-4-(dimethylamino)benzamide (CAS 865544-51-0)
- 2-(tert-Butyl)oxazolo[4,5-c]pyridine (CAS 873914-35-3)
- (R)-2-FLUORO-1-PHENYL-ETHYLAMINE (CAS 943780-72-1)
- Methyl6-nitroindoline-2-carboxylate (CAS 428861-43-2)
- 3-(2-Ethylbutyl)pyrrolidine (CAS 1219960-37-8)
- Methyl 4-(4-phenylpiperazin-1-yl)butanoate (CAS 1087613-95-3)
- trans-4-Amino-4-methylcyclohexanol (CAS 1408074-74-7)
- 4-Cyclopropoxy-6-(methylcarbamoyl)nicotinic acid (CAS 1243476-00-7)
- 1,2-Bis(o-aminophenoxy)ethane (CAS 52411-34-4)
- Peptide 433 (CAS CATO-CPTD788433)
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