Ethyl 1-(4-(3-nitrophenyl)thiazol-2-yl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate CAS 955975-70-9
| CAS No. | 955975-70-9 |
| Molecular Formula | C16H11F3N4O4S |
| Molecular Weight | 412.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Ethyl 1-(4-(3-nitrophenyl)thiazol-2-yl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate (CAS 955975-70-9) is a high-purity analytical reference standard with the molecular formula C16H11F3N4O4S and a molecular weight of 412.34 g/mol.
Based on its molecular formula C16H11F3N4O4S, Ethyl 1-(4-(3-nitrophenyl)thiazol-2-yl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 412.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), Ethyl 1-(4-(3-nitrophenyl)thiazol-2-yl)-5-(trifluoromethyl)-1H-pyrazole-4-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 | C16H11F3N4O4S |
| Molecular Weight | 412.34 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 1-[4-(4-nitrophenyl)-1,3-thiazol-2-yl]-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate (CAS 159885-64-0)
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Recommended Standards
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- 2-((2,5-Dioxo-1-(4-(trifluoromethoxy)phenyl)pyrrolidin-3-yl)thio)nicotinic acid (CAS 280133-24-6)
- Dolutegravir Impurity 36 (CAS CATO-C4X-162036)
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- 5-Methyl-1-((2-oxopyridin-1(2H)-yl)methyl)-1H-pyrazole-3-carboxylic acid (CAS 1263214-74-9)
- 2,8-Dimethylphenoxaphosphinine 10-oxide (CAS 21990-64-7)
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