1-(Bromomethyl)-2,3-difluoro-5-methoxy-4-methylbenzene CAS 1706430-78-5
| CAS No. | 1706430-78-5 |
| Molecular Formula | C9H9BrF2O |
| Molecular Weight | 251.07 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.
1-(Bromomethyl)-2,3-difluoro-5-methoxy-4-methylbenzene (CAS 1706430-78-5), molecular formula C9H9BrF2O and molecular weight 251.07 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(Bromomethyl)-2,3-difluoro-5-methoxy-4-methylbenzene (C9H9BrF2O) contains a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 251.07 g/mol, it falls into the medium-molecular-weight range. 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 | C9H9BrF2O |
| Molecular Weight | 251.07 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, water (slightly soluble) |
| 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.) | 1994 |
| Halogen Content | F/Br-containing |
Related Bromomethyl Standards
- 5-(Bromomethyl)-2-ethoxy-1,3-difluorobenzene (CAS 1017779-38-2)
- 2-(Bromomethyl)-1-(difluoromethoxy)-4-methylbenzene (CAS 1342768-08-4)
- 4-(Bromomethyl)-6-(difluoromethyl)-3-methylpyridin-2-amine (CAS 1803686-78-3)
- 3-(Bromomethyl)-5-(difluoromethyl)-6-methylpyridin-2-amine (CAS 1804686-54-1)
- 5-(Bromomethyl)-3-(difluoromethyl)-6-methylpyridin-2-amine (CAS 1805012-22-9)
- 3-(Bromomethyl)-5-(difluoromethyl)-4-methylpyridin-2-amine (CAS 1806893-86-6)
- 5-(Bromomethyl)-3-(difluoromethyl)-4-methylpyridin-2-amine (CAS 1806893-91-3)
- 1-(Bromomethyl)-4-ethoxy-2,3-difluorobenzene (CAS 181806-55-3)
Recommended Standards
- (1-(Phenylsulfonyl)-1H-pyrrol-2-yl)boronic acid (CAS 165071-70-5)
- Ethyl 5-bromo-4-oxotetrahydro-2H-pyran-3-carboxylate (CAS 1706436-05-6)
- 3-(4-Iodo-1h-pyrazol-1-yl)propan-1-amine (CAS 1495332-71-2)
- 2-(6-Bromo-2,3-difluorophenyl)propan-2-ol (CAS 173276-93-2)
- Ethyl 4-aminopentanoate hydrochloride (CAS 119396-97-3)
- 3-Allyl-2-(allylthio)quinazolin-4(3H)-one (CAS 202065-04-1)
- n-((4-Bromothiophen-2-yl)methyl)-1-ethyl-1h-pyrazol-4-amine (CAS 1155578-59-8)
- tert-Butyl 4-methyl-1H-indole-2-carboxylate (CAS 1375068-60-2)
- 1-(4-Methylbenzoyl)-9b-phenyl-1H,2H,3H,5H,9bH-imidazo[2,1-a]isoindol-5-one (CAS 338414-88-3)
- 3-(5-Bromo-2-fluorophenyl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 1038715-38-6)
- tert-Butyl 6-(2-chloroacetyl)-1H-indole-1-carboxylate (CAS 582305-44-0)
- 2-Amino-1-(1,5-dimethyl-1h-pyrazol-4-yl)ethan-1-ol (CAS 1497152-16-5)
- 6-Chloro-N-(p-tolyl)-2,3,4,9-tetrahydro-1H-carbazol-1-amine (CAS 812649-19-7)
- Bax inhibitor peptide V5 (CAS 579492-81-2)
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