1,4-Dibromo-2,5-difluoro-3-ethylbenzene CAS 1803708-45-3
| CAS No. | 1803708-45-3 |
| Molecular Formula | C8H6Br2F2 |
| Molecular Weight | 299.94 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 1,4-Dibromo-2,5-difluoro-3-ethylbenzene.
CATO supplies 1,4-Dibromo-2,5-difluoro-3-ethylbenzene (CAS 1803708-45-3), a certified reference material (molecular formula C8H6Br2F2, MW 299.94 g/mol) for analytical method development and quality control.
Owing to fluorine/bromine substitution, an aromatic ring system, 1,4-Dibromo-2,5-difluoro-3-ethylbenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 299.94 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C8H6Br2F2 |
| Molecular Weight | 299.94 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.) | 1995 |
| Halogen Content | F/Br-containing |
Related Dibromo Standards
- (1,2-Dibromo-2,2-difluoroethyl)benzene (CAS 384-63-4)
- 1,3-Dibromo-5-(1,1-difluoroethyl)benzene (CAS 2648588-65-0)
- 1,3-Dibromo-5-ethyl-5-methylimidazolidine-2,4-dione (CAS 82925-96-0)
- 3,4-Dibromo-6-fluoro-2-methoxyphenol (CAS 2413441-30-0)
- 2,3-dibromo-5-thiophenecarboxylic acid hydraZide (CAS 171851-25-5)
- 5,7-Dibromo-2,3-dihydrothieno[3,4-β][1,4]dioxine (CAS 174508-31-7)
- 3,4-Dibromo-5-methylthiophene-2-carboxylic acid (CAS 858840-46-7)
- 3,5-Dibromo-4-methylthiophene-2-carboxylic acid (CAS 856354-09-1)
Recommended Standards
- 3-Bromo-2-(difluoromethyl)benzyl bromide (CAS 1261859-79-3)
- 1-Bromo-2-(bromomethyl)-3-(difluoromethyl)benzene (CAS 1261791-24-5)
- 1,2-Bis(bromomethyl)-4,5-difluorobenzene (CAS 915944-27-3)
- 5-Bromo-2-(Difluoromethyl)benzyl bromide (CAS 1261760-28-4)
- 1-(5-Fluoro-3-iodo-1H-indol-2-yl)ethanone (CAS 2757700-58-4)
- 1,4-Diphenyl-5,8-dihydro-5,8-methanophthalazine (CAS 203982-88-1)
- Propylhydrazine Dihydrochloride (CAS 70629-59-3)
- (R)-3-(Boc-amino)-1-Cbz-pyrrolidine (CAS 122536-75-8)
- 5-Methylimidazo[1,2-a]pyridine-6-carbaldehyde (CAS 926310-59-0)
- α-Synuclein (61-95) (human) (CAS 154040-19-4)
- 2-Bromo-5-chloro-3-(difluoromethyl)-6-fluoropyridine (CAS 1804724-44-4)
- 5-((4-Acetylphenoxy)methyl)furan-2-carboxylic acid (CAS 832740-35-9)
- 2-(((1-((Benzyloxy)carbonyl)pyrrolidin-3-yl)methyl)(ethyl)amino)acetic acid (CAS 1353970-50-9)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
Why CATO?
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