6-Bromo-3-(3,4-dimethoxyphenyl)-4-methyl-2H-chromen-2-one CAS 720675-07-0
| CAS No. | 720675-07-0 |
| Molecular Formula | C18H15BrO4 |
| Molecular Weight | 375.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
6-Bromo-3-(3,4-dimethoxyphenyl)-4-methyl-2H-chromen-2-one (CAS 720675-07-0) is a high-purity analytical reference standard with the molecular formula C18H15BrO4 and a molecular weight of 375.21 g/mol.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, bromine substitution, 6-Bromo-3-(3,4-dimethoxyphenyl)-4-methyl-2H-chromen-2-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 375.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C18H15BrO4 |
| Molecular Weight | 375.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Br-containing |
Related Bromo Standards
- (Z)-2-(5-bromo-2-fluorobenzylidene)benzo[4,5]imidazo[2,1-b]thiazol-3(2H)-one (CAS 292169-72-3)
- 3-Bromo-3',3''-difluorotrityl alcohol (CAS 845790-82-1)
- 3-Bromo-4',4''-difluorotrityl alcohol (CAS 845790-78-5)
- 4-Bromo-3',3''-difluorotrityl alcohol (CAS 845790-81-0)
- 6-Bromo-4-(5-methylfuran-2-yl)-3-(3-oxobutyl)-1H-isochromen-1-one (CAS 917571-25-6)
- N-(3-((8-Bromo-6-(dimethylamino)-9H-purin-9-yl)methyl)phenyl)formamide (CAS 123811-36-9)
- 2-Bromo-N-(4-methyl-5-oxo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepin-7-yl)benzamide (CAS 922000-88-2)
- 2-Bromo-N-(4,5-dimethylisoxazol-3-yl)-N-(methoxymethyl)benzenesulfonamide (CAS 415697-57-3)
Recommended Standards
- 4-(4-Chlorobenzoyl)-N'-(6-chloropyridin-2-yl)-1H-pyrrole-2-carbohydrazide (CAS 338403-50-2)
- 7-O-w-Bromopropyldaidzein (CAS 309252-38-8)
- Ziprasidone Impurity 14 (CAS CATO-C4X-124014)
- Phosazetim (CAS 4104-14-7)
- (2,2′-Bipyridine-κN1,κN1′)bis[3,5-difluoro-2-(5-methyl-2-pyridinyl-κN)phenyl-κC]-, (OC-6-33)-Iridium(1+), hexafluorophosphate(1-) (1:1) (CAS 1335047-29-4)
- 7-(4-Chlorophenyl)-2-(methylthio)thieno[3,2-d]pyrimidin-4(3H)-one (CAS 1779132-84-1)
- (S)-Methyl 3-tert-butoxy-2-(tert-butoxycarbonylamino)propanoate (CAS 96637-65-9)
- 1-(6-Aminopyridin-3-yl)azetidin-3-ol (CAS 1253911-54-4)
- 1,2,3,4-Tetrahydroquinoxaline (CAS 3476-89-9)
- [(1,5-dimethyl-1h-pyrazol-4-yl)methyl][(2-methoxyphenyl)methyl]amine (CAS 1006473-46-6)
- 2-Azido-N-(3-methylphenyl)acetamide (CAS 1211462-24-6)
- Cyclopentyl 3-(3-pyrrolinomethyl)phenyl ketone (CAS 898749-72-9)
- 4-(Propan-2-yloxy)benzene-1,2-diamine (CAS 86723-16-2)
- Exenatide Acetate (CAS 141732-76-5)
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