1-Ethyl-5-methyl-3-(trifluoromethyl)-1H-pyrazole CAS 128694-64-4
| CAS No. | 128694-64-4 |
| Molecular Formula | C7H9F3N2 |
| Molecular Weight | 178.15 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-Ethyl-5-methyl-3-(trifluoromethyl)-1H-pyrazole.
CATO supplies 1-Ethyl-5-methyl-3-(trifluoromethyl)-1H-pyrazole (CAS 128694-64-4), a certified reference material (molecular formula C7H9F3N2, MW 178.15 g/mol) for analytical method development and quality control.
Owing to a nitrile group, fluorine substitution, 1-Ethyl-5-methyl-3-(trifluoromethyl)-1H-pyrazole is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 178.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 1-Ethyl-5-methyl-3-(trifluoromethyl)-1H-pyrazole 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 | C7H9F3N2 |
| Molecular Weight | 178.15 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- 7-methyl-[1,2,4]triazolo[4,3-c]pyrimidine-3-carboxylic acid (CAS 1283877-26-8)
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- 3-(4-Aminophenyl)-1,2,3,4-oxatriazol-3-ium-5-olate (CAS 1263143-25-4)
- 3-Amino[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic acid (CAS 1306738-89-5)
- Cyclobutyl(3-methylpyridin-4-yl)methanone (CAS 1603006-99-0)
- 4’-(4-Chlorophenoxy)acetophenone (CAS 41150-48-5)
- 4-(4-Fluorophenyl)-2-methylthiomorpholine-3,5-dione (CAS 344266-02-0)
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- 9-BROMO-4,5-DIHYDROBENZO[2,3]OXEPINO[4,5-D]THIAZOLE-2-CARBOXYLIC ACID (CAS 1189817-48-8)
- 2-(4-Methylphenoxy)acetohydrazide (CAS 36304-39-9)
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- 1-Fluoro-3-iodopropane (CAS 462-40-8)
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- Semaglutide impurity 49 (CAS CATO-C4X-222649)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com