6-Bromo-3-iodo-4H-1-benzopyran-4-one CAS 942474-12-6
| CAS No. | 942474-12-6 |
| Molecular Formula | C9H4BrIO2 |
| Molecular Weight | 350.94 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.
6-Bromo-3-iodo-4H-1-benzopyran-4-one (CAS 942474-12-6), molecular formula C9H4BrIO2 and molecular weight 350.94 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H4BrIO2, 6-Bromo-3-iodo-4H-1-benzopyran-4-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine/iodine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 350.94 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).
As a certified reference material (CRM), 6-Bromo-3-iodo-4H-1-benzopyran-4-one 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 | C9H4BrIO2 |
| Molecular Weight | 350.94 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br/I-containing |
Related Bromo Standards
- 7-Bromo-3-iodocinnolin-4(1H)-one (CAS 2765161-40-6)
- 3-Bromo-1-fluoro-2-iodonaphthalene (CAS 874907-48-9)
- 4-Bromo-1-fluoro-2-iodonaphthalene (CAS 2103228-86-8)
- 4-Bromo-3-(trifluoromethyl)phenylboronic acid pinacol ester (CAS 1256944-74-7)
- 2-(3-Bromo-5-(trifluoromethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 479411-92-2)
- 2-Bromo-3-trifluoromethylphenylboronic acid pinacol ester (CAS 2121513-56-0)
- 2-Bromo-1-iodo-3-(trifluoromethyl)benzene (CAS 1049731-01-2)
- 4-Bromo-2-iodobenzotrifluoride (CAS 1256945-00-2)
Recommended Standards
- 9-chloro-7-(nonan-5-yl)-1,2,3,4,4a,9b-hexahydrodibenzo[b,d]furan-4-ol (CAS CATO-C3D-262397)
- 5-Bromo-2-iodobenzotrifluoride (CAS 364-12-5)
- 4-Bromo-3-iodobenzotrifluoride (CAS 640280-28-0)
- 3-Bromo-5-iodobenzotrifluoride (CAS 481075-59-6)
- 4-Iodo-2,2-dimethyltetrahydro-2H-pyran (CAS 882687-80-1)
- (R)-CPP (CAS 126453-07-4)
- 1-tert-butyl-6-hydrazinyl-1H,4H,5H-pyrazolo[3,4-d]pyrimidine (CAS 1311316-97-8)
- Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxohexadecyl)-.omega.-hydroxy- (CAS 9004-94-8)
- 2,3-Dibromo-4,5-difluorothiophenol (CAS 1803715-74-3)
- 5-hydroxypyridazine-4-carboxylic acid (CAS 21579-35-1)
- 3-Amino-N-(4-iodo-phenyl)-4-methoxy-benzenesulfonamide (CAS 379726-54-2)
- 2-Cyano-N-(pyrimidin-2-yl)acetamide (CAS 90158-72-8)
- 3-Cyclopropoxy-5-fluoro-N-methylbenzamide (CAS 1243409-49-5)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com