5-Bromo-2,3-dichlorotoluene CAS 204930-38-1
| CAS No. | 204930-38-1 |
| Molecular Formula | C7H5BrCl2 |
| Molecular Weight | 239.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to chlorine/bromine substitution, an aromatic ring system, 5-Bromo-2,3-dichlorotoluene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 239.92 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
5-Bromo-2,3-dichlorotoluene (CAS 204930-38-1), molecular formula C7H5BrCl2 and molecular weight 239.92 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C7H5BrCl2 |
| Molecular Weight | 239.92 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.) | 2015 |
| Halogen Content | Cl/Br-containing |
Related Bromo Standards
- 1-Bromo-2,5-dichloro-3-methylbenzene (CAS 1000571-63-0)
- 1-Bromo-3-chloro-5-(chloromethyl)benzene (CAS 1060812-67-0)
- 1-Bromo-3,5-dichloro-2-methylbenzene (CAS 115615-19-5)
- 1-Bromo-3-chloro-2-(chloromethyl)benzene (CAS 1242284-61-2)
- 1-Bromo-4-chloro-2-(chloromethyl)benzene (CAS 1261678-76-5)
- 1-Bromo-2-chloro-3-(chloromethyl)benzene (CAS 1261790-43-5)
- 1-Bromo-2,4-dichloro-3-methylbenzene (CAS 127049-87-0)
- 6-Bromo-2,3-dichlorotoluene (CAS 1805023-65-7)
Recommended Standards
- 4-Bromo-2,6-dichlorotoluene (CAS 204930-37-0)
- 5-Bromo-2,4-dichlorotoluene (CAS 85072-41-9)
- 3-Bromo-4,5-dichlorotoluene (CAS 960305-14-0)
- 5-Bromo-2-chlorobenzyl Chloride (CAS 928758-19-4)
- 4-chloro-N,N-dimethyl-6-phenyl-1,3,5-triazin-2-amine (CAS 36323-70-3)
- (E)-3-Aminobut-2-enenitrile (CAS 763-33-7)
- Ethyl 2-bromo-4-chloronicotinate (CAS 1256561-52-0)
- 2-(3-(4-Chlorobenzyl)phenoxy)-2-methylpropanoic acid (CAS 62810-32-6)
- 2-(3-Chlorophenyl)-6-oxo-1,6-dihydropyrimidine-5-carboxylic acid (CAS 1087606-58-3)
- Metoclopramide impurity 81 (CAS CATO-C4X-141581)
- 2-[4-(propan-2-yl)phenyl]-1,3-thiazole-4-carboxylic acid (CAS 115311-26-7)
- 4-Methyldihydrothiophen-3(2H)-one 1,1-dioxide (CAS 39246-95-2)
- N-(pyrimidin-2-ylmethyl)piperidin-4-amine (CAS 2273737-53-2)
- D-[Ser]8-Semaglutide (CAS CATO-CPTD788632)
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