3-(5-Bromothiophen-2-yl)-1-methyl-5-(trifluoromethyl)-1H-pyrazole CAS 683274-57-9
| CAS No. | 683274-57-9 |
| Molecular Formula | C9H6BrF3N2S |
| Molecular Weight | 311.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
3-(5-Bromothiophen-2-yl)-1-methyl-5-(trifluoromethyl)-1H-pyrazole (CAS 683274-57-9) is a high-purity analytical reference standard with the molecular formula C9H6BrF3N2S and a molecular weight of 311.12 g/mol.
3-(5-Bromothiophen-2-yl)-1-methyl-5-(trifluoromethyl)-1H-pyrazole (C9H6BrF3N2S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, fluorine/bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C9H6BrF3N2S |
| Molecular Weight | 311.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromothiophen Standards
- (E)-1-(5-Bromothiophen-2-yl)-3-(4-fluorophenyl)prop-2-en-1-one (CAS 1372198-16-7)
- n-((4-Bromothiophen-2-yl)methyl)-N-methylisonicotinamide (CAS 1223345-87-6)
- n-((4-Bromothiophen-2-yl)methyl)-N-methylpicolinamide (CAS 1241517-71-4)
- 1-((5-Bromothiophen-2-yl)methyl)-3-phenylurea (CAS 1241554-57-3)
- 4-(5-Bromothiophen-2-ylsulfonyl)tetrahydro-2H-pyran (CAS 1253790-83-8)
- 1-[(5-bromothiophen-2-yl)sulfonyl]piperazine (CAS 725688-07-3)
- N-(1-(4-Bromothiophen-2-yl)ethyl)-2-methylpropane-2-sulfinamide (CAS 2361398-24-3)
- 3-(((5-Bromothiophen-2-yl)methyl)amino)tetrahydrothiophene 1,1-dioxide (CAS 1019484-08-2)
Recommended Standards
- 2-(Benzyloxy)-5-iodopyridine (CAS 209973-99-9)
- 3,5-Dichloro-N-(3-nitrophenyl)benzamide (CAS 478048-22-5)
- 2-(Benzyloxy)-4-iodopyridine (CAS 896155-81-0)
- 3-Chlorobenzoic peroxyanhydride (CAS 845-30-7)
- 2-(((1H-Indol-3-yl)methylene)amino)acetic acid (CAS 201812-47-7)
- 1-(tert-Butyldimethylsilyl)imidazole [tert-Butyldimethylsilylating Agent] (CAS 54925-64-3)
- 2-Fluoropalmitic acid (CAS 89270-22-4)
- Methyl 2-(7-methoxy-2-oxo-2h-chromen-4-yl)acetate (CAS 62935-73-3)
- (Nle35)-Amyloid β-Protein (1-42) ammonium salt (CAS 1802086-51-6)
- [(5-chloropyridin-2-yl)methyl](methyl)amine (CAS 1060802-06-3)
- 2-(Ethylthio)-1-phenylpropan-1-one (CAS 69274-39-1)
- 7-Methoxy-3-propylisobenzofuran-1(3H)-one (CAS 88440-78-2)
- 3-(2,4-Dichlorophenyl)-4-iodo-1H-pyrazole (CAS 1340190-85-3)
- Semaglutide Impurity 191 (CAS CATO-C4X-2226191)
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