4-Bromo-5-methyl-1,3-dihydroisobenzofuran CAS 873694-99-6
| CAS No. | 873694-99-6 |
| Molecular Formula | C9H9BrO |
| Molecular Weight | 213.07 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 4-Bromo-5-methyl-1,3-dihydroisobenzofuran (CAS 873694-99-6), a certified reference material (molecular formula C9H9BrO, MW 213.07 g/mol) for analytical method development and quality control.
Structurally, 4-Bromo-5-methyl-1,3-dihydroisobenzofuran (C9H9BrO) contains a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 213.07 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 4-Bromo-5-methyl-1,3-dihydroisobenzofuran 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 | C9H9BrO |
| Molecular Weight | 213.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
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Recommended Standards
- 4-Bromo-3-methylbenzimidamide (CAS 202805-69-4)
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- 4-Bromo-3,5-dimethylbenzaldehyde (CAS 400822-47-1)
- 4-Bromochromane (CAS 876513-36-9)
- 6-(2,5-Difluorophenyl)nicotinaldehyde (CAS 898796-11-7)
- 6-Methoxy-4-methyl-1H-indole-2-carboxylic acid (CAS 1158787-40-6)
- 3-Bromo-2-fluoro-5-methylbenzaldehyde (CAS 1257665-03-4)
- 1-Ethyl-5,6-difluoroindolin-2-one (CAS 2243743-32-8)
- Methyl 1-(4-methoxyphenyl)-3,6-dimethyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 937600-02-7)
- Benzyl N-[(1S,3S)-3-hydroxycyclohexyl]carbamate (CAS 750649-39-9)
- Pivaloylleucine (CAS 1801893-44-6)
- 3-Amino-1-isopropyl-1H-pyrazole-4-carboxylic acid (CAS 90008-61-0)
- Diethyl undec-10-en-1-ylphosphonate (CAS 156125-40-5)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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