5-Bromo-2-(bromomethyl)-1,3-dimethylbenzene CAS 2090975-80-5
| CAS No. | 2090975-80-5 |
| Molecular Formula | C9H10Br2 |
| Molecular Weight | 277.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-Bromo-2-(bromomethyl)-1,3-dimethylbenzene (C9H10Br2) contains 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 277.98 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.
5-Bromo-2-(bromomethyl)-1,3-dimethylbenzene (CAS 2090975-80-5), molecular formula C9H10Br2 and molecular weight 277.98 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C9H10Br2 |
| Molecular Weight | 277.98 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.) | 1997 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 1-Bromo-2-(3-bromopropyl)benzene (CAS 1075-28-1)
- 1-bromo-4-(1-bromopropyl)benzene (CAS 1094335-60-0)
- 1-Bromo-3-(3-bromopropyl)benzene (CAS 109757-61-1)
- 1-Bromo-4-(2-bromopropyl)benzene (CAS 1310280-63-7)
- 1-Bromo-2-(1-bromopropan-2-yl)benzene (CAS 1489124-59-5)
- 1-Bromo-4-(2-bromoethyl)-2-methylbenzene (CAS 1514058-22-0)
- 1-Bromo-3-(1-bromopropan-2-yl)benzene (CAS 23430-49-1)
- 1-Bromo-3-(2-bromopropyl)benzene (CAS 23430-37-7)
Recommended Standards
- 4-Bromo-2,5-dimethylbenzyl bromide (CAS 88111-73-3)
- Anastrozole Impurity 12 (CAS 19294-04-3)
- 3,4-Dibromo-isopropylbenzene (CAS 42755-48-6)
- 2,4-Dibromo-1,3,5-trimethylbenzene (CAS 6942-99-0)
- 6,6-Dimethyl-5,8-dihydro-6H-pyrano[4',3':4,5]thieno[2,3-d]pyrimidin-4-amine (CAS 65413-58-3)
- TAPI 0 (CAS 163958-73-4)
- Benzyl (1S,2S)-1-[[(3-methoxypropyl)amino]carbonyl]-2-methylbutylcarbamate (CAS 1820579-55-2)
- Rel-(1R,2S)-2-(trifluoromethyl)cyclohexane-1-carboxylic acid (CAS 161170-50-9)
- tert-Butyl 2-carbamothioyl-4-fluoropyrrolidine-1-carboxylate (CAS 860344-40-7)
- N-Dansyl-D-phenylalanine (CAS 56176-31-9)
- Voriconazole Impurity 53 (CAS 759-67-1)
- Bromoacetyl Bromide (CAS 598-21-0)
- (5-(Difluoromethyl)-1-methyl-1H-1,2,3-triazol-4-yl)methanamine (CAS 1934569-79-5)
- Epidermal Growth Factor Receptor Peptide (985-996) (CAS 96249-43-3)
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