3,5-Difluoro-4-trifluoromethylbromobenzene CAS 156243-64-0
| CAS No. | 156243-64-0 |
| Molecular Formula | C7H2BrF5 |
| Molecular Weight | 260.99 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.
CATO supplies 3,5-Difluoro-4-trifluoromethylbromobenzene (CAS 156243-64-0), a certified reference material (molecular formula C7H2BrF5, MW 260.99 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H2BrF5, 3,5-Difluoro-4-trifluoromethylbromobenzene contains fluorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 260.99 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 3,5-Difluoro-4-trifluoromethylbromobenzene 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 | C7H2BrF5 |
| Molecular Weight | 260.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | F/Br-containing |
Related Difluoro Standards
- 3,4-Difluoro-2-trifluoromethyl-bromobenzene (CAS 1242339-23-6)
- Methyl 2,2-difluoro-6-nitro-1,3-dioxaindane-5-carboxylate (CAS 1260505-37-0)
- 2,2-Difluoro-4-methyl-6-nitrobenzo[d][1,3]dioxole-5-carboxylic acid (CAS 2451905-65-8)
- 3,3-Difluoro-1-(2,2,2-trifluoroacetyl)piperidine-2-carboxylic acid (CAS 1039364-78-7)
- Ethyl 2-(2,4-difluoro-5-nitrophenoxy)acetate (CAS 179011-36-0)
- ethyl 2,2-difluoro-2-(3-nitrophenoxy)acetate (CAS 383670-91-5)
- ethyl 2,2-difluoro-2-(4-nitrophenoxy)acetate (CAS 383670-74-4)
- Ethyl 2,2-difluoro-4,4-dihydroxy-4-pyridin-4-ylbutanoate (CAS 1706449-05-9)
Recommended Standards
- 3-Bromo-2,6-difluorobenzotrifluoride (CAS 1263377-74-7)
- 2-Bromo-1,3-difluoro-4-(trifluoromethyl)benzene (CAS 1805023-67-9)
- 2-Bromo-1,4-difluoro-3-(trifluoromethyl)benzene (CAS 1242339-93-0)
- 3-Bromo-4,5-difluorobenzotrifluoride (CAS 1805119-88-3)
- N-Acetyl-N-(5-bromo-2-chloropyrimidin-4-yl)acetamide (CAS 1630906-79-4)
- [[(2R,3R,4R,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-4-fluoro-3-hydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate (CAS 202186-97-8)
- 5-aminooxan-3-ol hydrochloride (CAS 2102408-50-2)
- Methyl 2-(2-cyano-3-(4-(diethylamino)phenyl)acrylamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 379714-54-2)
- Tert-butyl (1R,3S,5R)-3-(2-methoxy-2-oxoethyl)-2-azabicyclo[3.1.0]Hexane-2-carboxylate (CAS 2414675-52-6)
- 4,6-Diaminopyrimidine-2(1H)-thione hydrate (CAS 303136-89-2)
- 4-(5-(Allylthio)-4-ethyl-4H-1,2,4-triazol-3-yl)-1-((4-methoxyphenyl)sulfonyl)piperidine (CAS 383148-32-1)
- 5-Methyl-3-phenyl-1H-indole-2-carboxylic acid (CAS 27294-03-7)
- Rimegepant Impurity 136 (CAS CATO-C4X-2487136)
- Peptide Impurity 11 X TFA Salt (CAS CATO-CPTD788811)
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