1-Methyl-3-(thiophen-2-yl)-5-(trifluoromethyl)-1H-pyrazole CAS 650615-64-8
| CAS No. | 650615-64-8 |
| Molecular Formula | C9H7F3N2S |
| Molecular Weight | 232.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, fluorine substitution, 1-Methyl-3-(thiophen-2-yl)-5-(trifluoromethyl)-1H-pyrazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 232.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-Methyl-3-(thiophen-2-yl)-5-(trifluoromethyl)-1H-pyrazole (CAS 650615-64-8) is a high-purity analytical reference standard with the molecular formula C9H7F3N2S and a molecular weight of 232.23 g/mol.
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-Methyl-3-(thiophen-2-yl)-5-(trifluoromethyl)-1H-pyrazole 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 | C9H7F3N2S |
| Molecular Weight | 232.23 g/mol |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 1-Methyl-5-(thiophen-3-yl)-3-(trifluoromethyl)-1H-pyrazole (CAS 1532507-55-3)
- 1-Methyl-5-(thiophen-2-yl)-3-(trifluoromethyl)-1H-pyrazole (CAS 683274-56-8)
- 6-(Thiophen-2-yl)-[1,2,4]triazolo[1,5-a]pyrimidine-2,7-diamine (CAS 338793-64-9)
- 6-(Thiophen-3-yl)-[1,2,4]triazolo[1,5-a]pyrimidine-2,7-diamine (CAS 303145-70-2)
- 2-(Thiophen-2-ylthio)succinic acid (CAS 3807-43-0)
- 3-((Thiophen-3-ylmethyl)amino)benzamide (CAS 1042602-29-8)
- N-(2-(Thiophen-2-yl)ethyl)isonicotinamide (CAS 1180586-87-1)
- 2-(2-(Thiophen-2-yl)ethyl)benzoic acid (CAS 1622-54-4)
Recommended Standards
- 1-[4-(2,6-difluorophenyl)phenyl]ethan-1-one (CAS 56917-38-5)
- 1,4-Dimethoxy-2-naphthoic acid (CAS 78265-13-1)
- 1-Methyl-5-(trifluoromethyl)-1,3-dihydro-2H-benzo[d]imidazole-2-thione (CAS 7341-87-9)
- 1,3-Dimethoxy-2-naphthoic acid (CAS 93087-59-3)
- 2,2,3,3,4,4,4-heptadeuteriobutanoyl chloride (CAS 1219805-71-6)
- 2,8-Dichloroquinazolin-4(1H)-one (CAS 62484-39-3)
- Potassium (4-aminophenyl)trifluoroborate (CAS 1386231-56-6)
- 1,3-Dimethyl-5-thioxohexahydroimidazo[4,5-d]imidazol-2(1H)-one (CAS 71541-02-1)
- tert-Butyl (1R,4S,6R)-6-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate (CAS 1932398-86-1)
- 2-(2-(4-Fluoro-2-methylphenoxy)ethyl)-1,3-dioxane (CAS 1443305-17-6)
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- 3-Amino-1,5-dimethylpyridin-2(1H)-one (CAS 1394734-82-7)
- 1-[(1,3-Dimethyl-1H-pyrazol-4-yl)methyl]-5-oxopyrrolidine-3-carboxylic acid (CAS 1172570-52-3)
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