6-Bromoisobenzofuran-1(3H)-one CAS 19477-73-7
| CAS No. | 19477-73-7 |
| Molecular Formula | C8H5BrO2 |
| Molecular Weight | 213.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 6-Bromoisobenzofuran-1(3H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 213.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 6-Bromoisobenzofuran-1(3H)-one (CAS 19477-73-7), a certified reference material (molecular formula C8H5BrO2, MW 213.03 g/mol) for analytical method development and quality control.
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.
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 | C8H5BrO2 |
| Molecular Weight | 213.03 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 1962 |
| Halogen Content | Br-containing |
Related Bromoisobenzofuran Standards
Recommended Standards
- 8-Bromo-[1,2,4]triazolo[1,5-a]pyridin-6-amine (CAS 2172014-24-1)
- 3-Bromophthalide (CAS 6940-49-4)
- 7-Bromoimidazo[1,2-a]pyridin-2(3H)-one (CAS 507224-75-1)
- Butylphthalide Impurity 67 (CAS 102308-43-0)
- 7-Ethyl-2-hydroxypyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 1049873-68-8)
- trans-2-[4-(Trifluoromethoxy)phenyl]cyclopropanecarboxylic Acid (CAS 238431-33-9)
- 3,4-Dimethyl-2-morpholinomethyl benzophenone (CAS 898750-56-6)
- 1-(Adamantan-1-yl)-N-(pyridin-4-ylmethyl)ethan-1-amine (CAS 341009-23-2)
- Topiroxostat Impurity 36 (CAS 35451-46-8)
- 4-chloroquinazolin-2-amine (CAS 124309-74-6)
- 3-fluoro-2-methylpropanoic acid (CAS 433-39-6)
- 3-Iodopyrazine-2-carbaldehyde (CAS 212471-35-7)
- N-(3-Chlorophenyl)-2-((5-(((2,6-dimethylphenyl)amino)methyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 332911-79-2)
- Semaglutide impurity 29 (CAS CATO-C4X-222629)
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