3-(Ethoxycarbonyl)-1-(2-ethylphenyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid CAS 1264043-12-0
| CAS No. | 1264043-12-0 |
| Molecular Formula | C16H20N2O4 |
| Molecular Weight | 304.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 304.34 g/mol gives 3-(Ethoxycarbonyl)-1-(2-ethylphenyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-(Ethoxycarbonyl)-1-(2-ethylphenyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264043-12-0), a certified reference material (molecular formula C16H20N2O4, MW 304.34 g/mol) for analytical method development and quality control.
Based on its molecular formula C16H20N2O4, 3-(Ethoxycarbonyl)-1-(2-ethylphenyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 304.34 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.
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.
CATO manufactures 3-(Ethoxycarbonyl)-1-(2-ethylphenyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-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 | C16H20N2O4 |
| Molecular Weight | 304.34 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
Related Ethoxycarbonyl Standards
- 3-(Ethoxycarbonyl)-1-(4-ethylphenyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264041-94-2)
- 3-(Ethoxycarbonyl)-1-[4-(propan-2-yl)phenyl]-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264042-48-9)
- N-(Ethoxycarbonyl)-α-methyl-D-tryptophan Methyl Ester (CAS 170458-98-7)
- 4-({[3-(ethoxycarbonyl)-5-methylisoxazol-4-yl]methyl}amino)benzoic acid (CAS 938022-07-2)
- 5-(5-(Ethoxycarbonyl)-3-methyl-1H-pyrazol-1-yl)-2-methoxybenzoic acid (CAS 637318-31-1)
- (E)-3-(2-(Ethoxycarbonyl)-5-nitro-1H-indol-3-yl)acrylic acid (CAS 885273-59-6)
- 2-Ethoxycarbonyl-5-ethylphenylboronic acid pinacol ester (CAS 2121511-54-2)
- (4-(3-(Ethoxycarbonyl)piperidine-1-carbonyl)phenyl)boronic acid (CAS 1150114-74-1)
Recommended Standards
- 1-(3,5-Dimethylphenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264042-80-9)
- 1-(2,5-Dimethylphenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264043-65-3)
- 1-(2,3-Dimethylphenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264048-90-9)
- 4-(4-Fluorophenyl)-2-methyl-3-(methylthio)-3,5-dihydro-1H-pyrrolo[3,4-c]pyridine-1,6(2H)-dione (CAS 1269532-53-7)
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