Dimethyl 5-(Bromomethyl)isophthalate CAS 42268-88-2
| CAS No. | 42268-88-2 |
| Molecular Formula | C11H11BrO4 |
| Molecular Weight | 287.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Dimethyl 5-(Bromomethyl)isophthalate (CAS 42268-88-2), a certified reference material (molecular formula C11H11BrO4, MW 287.11 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H11BrO4, Dimethyl 5-(Bromomethyl)isophthalate 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 287.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C11H11BrO4 |
| Molecular Weight | 287.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Halogen Content | Br-containing |
Related Dimethyl Standards
- Dimethyl 2-(bromomethyl)isophthalate (CAS 16281-93-9)
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- Dimethyl 2-(3-Bromophenyl)malonate (CAS 773134-24-0)
- Dimethyl 2-(bromomethyl)terephthalate (CAS 57834-13-6)
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- 3,3-Dimethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)indolin-2-one (CAS 1190861-74-5)
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Recommended Standards
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- Brallobarbital (CAS 561-86-4)
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