2-Bromo-3-chloro-5-methylphenol CAS 1780800-51-2
| CAS No. | 1780800-51-2 |
| Molecular Formula | C7H6BrClO |
| Molecular Weight | 221.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 221.48 g/mol gives 2-Bromo-3-chloro-5-methylphenol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Bromo-3-chloro-5-methylphenol (CAS 1780800-51-2), molecular formula C7H6BrClO and molecular weight 221.48 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Bromo-3-chloro-5-methylphenol (C7H6BrClO) contains a hydroxyl group, an ether linkage, chlorine/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 221.48 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.
As a certified reference material (CRM), 2-Bromo-3-chloro-5-methylphenol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H6BrClO |
| Molecular Weight | 221.48 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 | Cl/Br-containing |
Related Bromo Standards
- 4-Bromo-3-chlorobenzene-1,2-diamine, 97% (CAS 1008361-80-5)
- (4-Bromo-3-chlorophenyl)hydrazine (CAS 103722-57-2)
- 6-Bromo-2-chloro-4-methylpyridin-3-amine (CAS 1038920-08-9)
- (2-Bromo-6-chloropyridin-3-yl)methanamine (CAS 1060815-62-4)
- (2-Bromo-6-chloropyridin-4-yl)methanamine (CAS 1060815-63-5)
- (6-Bromo-2-chloropyridin-3-yl)methanamine (CAS 1060815-70-4)
- 2-Bromo-4-chloro-6-hydroxytoluene (CAS 1082040-46-7)
- 4-Bromo-5-chloro-2-methylphenol (CAS 1092460-50-8)
Recommended Standards
- 5-Bromo-4-chloro-2-methylphenol (CAS 1780721-85-8)
- 3-Bromo-4-chloro-5-methylphenol (CAS 1781520-34-0)
- 3-Bromo-2-chloroanisole (CAS 174913-11-2)
- (5-Bromo-6-chloropyridin-2-yl)methanamine hydrochloride (CAS 1799439-04-5)
- Methyl (2S,4R)-4-Boc-aminopyrrolidine-2-carboxylate hydrochloride (CAS 913742-54-8)
- 2-Chloro-N-(2-(dimethylamino)ethyl)acetamide (CAS 788779-09-9)
- tert-Butyl 4-(3-hydroxypropyl)benzoate (CAS 126931-32-6)
- n-(Piperidin-4-ylmethyl)-3-(trifluoromethyl)pyridin-2-amine hydrochloride (CAS 2680615-65-8)
- 2-(2-Fluorophenyl)acetohydrazide (CAS 116622-94-7)
- Selenophene-2-carbonyl chloride (CAS 39082-07-0)
- 2-Bromo-6-methylpyrimidine-4-carbonitrile (CAS 1698473-34-5)
- 4-Bromo-1-methyl-1H-imidazole-2-carbaldehyde (CAS 79326-91-3)
- 2-Methoxy-N-(thiophen-2-ylmethyl)pyridin-3-amine (CAS 1157624-25-3)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
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