6-Bromo-4-methyl-2H-chromen-2-one CAS 65490-12-2
| CAS No. | 65490-12-2 |
| Molecular Formula | C10H7BrO2 |
| Molecular Weight | 239.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 6-Bromo-4-methyl-2H-chromen-2-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.
6-Bromo-4-methyl-2H-chromen-2-one (CAS 65490-12-2) is a high-purity analytical reference standard with the molecular formula C10H7BrO2 and a molecular weight of 239.07 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 6-Bromo-4-methyl-2H-chromen-2-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 239.07 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).
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 | C10H7BrO2 |
| Molecular Weight | 239.07 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1975 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 6-Bromo-7-methyl-1h-indazole-3-carbaldehyde (CAS 1000340-73-7)
- 4-Bromo-7-methyl-2H-indazole-3-carbaldehyde (CAS 1000340-81-7)
- 1-(4-Bromo-1H-pyrrolo[2,3-b]pyridin-1-yl)ethanone (CAS 1000340-84-0)
- 5-Bromo-6-methyl-7H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (CAS 1000343-91-8)
- 5-(4-Bromo-2-methylphenyl)-1H-tetrazole (CAS 1007128-19-9)
- 1-{6-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl}ethan-1-one (CAS 1011711-60-6)
- 5-bromo-2-(1H-1,2,4-triazol-1-yl)aniline (CAS 1016809-06-5)
- 7-Bromo-3-methylquinoxalin-2(1H)-one (CAS 103095-19-8)
Recommended Standards
- 6-Bromo-4-methyl-1H-indazole-3-carbaldehyde (CAS 885521-01-7)
- 6-Bromo-4-methylquinazolin-8-ol (CAS 2231399-83-8)
- 6-bromo-4-methoxyquinazoline (CAS 915924-79-7)
- 6-Bromo-7-methylquinazolin-4(3H)-one (CAS 943605-85-4)
- 1-(5-Bromo-3-methylpyridin-2-yl)ethanamine (CAS 1270362-11-2)
- N,N'-Bis(4-formylphenyl)-N,N'-diphenylbenzidine (CAS 137911-28-5)
- (1-(3,4-Dichlorophenyl)-1H-1,2,3-triazole-4,5-diyl)dimethanol (CAS 129748-81-8)
- 4-Chloro-3-nitro-1h-pyrazole-5-carbohydrazide (CAS 1046463-61-9)
- 3-(M-tolylamino)pyrazine-2-carbonitrile (CAS 1247096-96-3)
- Methyl 2-fluoro-6-formylbenzoate (CAS 1256593-43-7)
- Benzo[c][1,2,5]oxadiazol-4-amine (CAS 767-63-5)
- Ethyl 3-(1,3-Benzodioxol-5-yl)-2-cyanoacrylate (CAS 153910-33-9)
- (1-Methyl-3-(pyridin-2-yl)-1H-pyrazol-5-yl)methanamine (CAS 1783452-99-2)
- Semaglutide Impurity 16 (CAS CATO-C4X-222616)
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