1,3,5-tribromo-2,4-dimethoxybenzene CAS 25676-73-7
| CAS No. | 25676-73-7 |
| Molecular Formula | C8H7Br3O2 |
| Molecular Weight | 374.85 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.
1,3,5-tribromo-2,4-dimethoxybenzene (CAS 25676-73-7), molecular formula C8H7Br3O2 and molecular weight 374.85 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H7Br3O2, 1,3,5-tribromo-2,4-dimethoxybenzene contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 374.85 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H7Br3O2 |
| Molecular Weight | 374.85 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Br-containing |
Related tribromo Standards
- 2,4,6-Tribromo-3-nitroaniline (CAS 62406-72-8)
- 2,4,6-Tribromo-3,5-difluorobenzonitrile (CAS 943528-40-3)
- 2,4,6-Tribromo-3-nitrophenol (CAS 69076-62-6)
- 1,2,3-Tribromo-5-(tert-butyl)benzene (CAS 114895-17-9)
- 3,3,5-Tribromo--2-oxo-7-azaindoline (CAS 183208-32-4)
- 3,4,5-Tribromo-6-cyano (1H)indazole (CAS 1000342-54-0)
- 2,3,6-Tribromo(difluoromethoxy)benzene (CAS 1261269-96-8)
- 1,2,4-Tribromo-5-(difluoromethoxy)benzene (CAS 1261650-61-6)
Recommended Standards
- Etizolam Impurity 29 (CAS CATO-C4X-350929)
- 2-((4-Amino-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-chloro-2-methylphenyl)acetamide (CAS 577990-13-7)
- Etoricoxib Impurity 24 (CAS 325855-71-8)
- N-(4-Chlorophenyl)-2-((4-ethyl-5-(pyrazin-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 578736-90-0)
- 6-Chloroisoquinoline-1,3(2H,4H)-dione (CAS 98592-38-2)
- 5-methoxy-7-methyl-3H-benzimidazole-4-carbaldehyde (CAS 2760670-75-3)
- Diisopropyldiphenylsilane (CAS 75544-10-4)
- Methyl 4-chloropyrido[2,3-d]pyrimidine-2-carboxylate (CAS 1260761-86-1)
- 3,4-Bisbenzyloxybenzaldehyde, 97% (CAS 5447-02-9)
- Ethyl 1,6-dihydro-1-[(4-methoxyphenyl)methyl]-5-[[(trifluoromethyl)sulfonyl]oxy]-3-cyclopentapyrazolecarboxylate (CAS 2792144-23-9)
- 2-Methyl-3-(3-methyl-1h-pyrazol-1-yl)-2-(methylamino)propanamide (CAS 1341540-28-0)
- 4-Methoxy-N-(3-methylbutan-2-yl)aniline (CAS 293743-26-7)
- Piperidin-3-amine Dihydrochloride (CAS 138060-07-8)
- Insulin Degludec Impurity 3 (CAS CATO-C4X-21573)
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