4-Bromo-2-ethyl-1-methylbenzene CAS 1161497-35-3
| CAS No. | 1161497-35-3 |
| Molecular Formula | C9H11Br |
| Molecular Weight | 199.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 199.09 g/mol gives 4-Bromo-2-ethyl-1-methylbenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-Bromo-2-ethyl-1-methylbenzene (CAS 1161497-35-3), a certified reference material (molecular formula C9H11Br, MW 199.09 g/mol) for analytical method development and quality control.
4-Bromo-2-ethyl-1-methylbenzene (C9H11Br) contains bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H11Br |
| Molecular Weight | 199.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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.) | 1989 |
| Halogen Content | Br-containing |
Related Bromo Standards
- (R)-(1-Bromo-2-propyl)benzene (CAS 116724-02-8)
- 3-Bromo-5-ethyltoluene (CAS 1208075-19-7)
- 1-Bromo-3-ethyl-2-methylbenzene (CAS 1369886-45-2)
- (S)-(1-Bromo-2-propyl)benzene (CAS 147514-19-0)
- 2-Bromo-4-ethyl-1-methylbenzene (CAS 17070-97-2)
- 1-Bromo-2-propylbenzene (CAS 19614-14-3)
- 1-Bromo-1-phenylpropane, 97% (CAS 2114-36-5)
- 1-Bromo-2,3,4-trimethylbenzene (CAS 40101-33-5)
Recommended Standards
- 3,5-dichloro-6-methoxy-4-methyl-pyridazine (CAS 2806810-60-4)
- 374-99-2 1-Butanamine, 2,2,3,3,4,4,4-heptafluoro- Butylamine, 2,2,3,3,4,4,4-heptafluoro- 2,2,3,3,4,4,4-Heptafluorobutylamine 4-04-00-00610 (Beilstein Handbook Reference) AI3-17127 BRN 1761906 EINECS 206-780-0 (CAS 374-99-2)
- Methyl 2-bromo-2-(methylsulfanyl)acetate (CAS 77825-52-6)
- Benzo[c][1,2,5]selenadiazol-4-ol (CAS 767-67-9)
- 5-Propyl-1-(3-(trifluoromethyl)benzyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1338674-13-7)
- tert-Butyl 4-(2-aminopropyl)-1-piperidinecarboxylate (CAS 1782612-46-7)
- 1-(2-Chlorophenyl)-3-(methylamino)pyrrolidin-2-one hydrochloride (CAS 1311313-56-0)
- 1-(Cis-octahydrocyclohepta[b]pyrrol-1(2H)-yl)ethanone (CAS 87624-00-8)
- o-(2-Fluorobenzyl)hydroxylamine (CAS 55418-27-4)
- Roxadustat Impurity 95 (CAS CATO-C4X-221395)
- 6-Bromo-2-(2,2,2-trifluoroethyl)pyridazin-3(2h)-one (CAS 1824276-23-4)
- 5,6-Dimethoxy-2,3-dihydro-1H-inden-1-ol (CAS 33884-52-5)
- (Z)-2-(2-((Z)-1,2-dibromovinyl)-5-(piperidin-1-ylmethyl)furan-3-yl)pent-2-enoic acid (CAS CATO-C3D-262262)
- Fibrinopeptide A (human) (CAS 25422-31-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com