7-(2-bromoethoxy)-4-methyl-2H-chromen-2-one CAS 7471-76-3
| CAS No. | 7471-76-3 |
| Molecular Formula | C12H11BrO3 |
| Molecular Weight | 283.12 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.
7-(2-bromoethoxy)-4-methyl-2H-chromen-2-one (CAS 7471-76-3) is a high-purity analytical reference standard with the molecular formula C12H11BrO3 and a molecular weight of 283.12 g/mol.
Structurally, 7-(2-bromoethoxy)-4-methyl-2H-chromen-2-one (C12H11BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 283.12 g/mol, it falls into the medium-molecular-weight range. 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 | C12H11BrO3 |
| Molecular Weight | 283.12 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 sealed and dry, 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; Hygroscopic; reseal immediately after opening; 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.) | 1959 |
| Halogen Content | Br-containing |
Related bromoethoxy Standards
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- (2-Bromoethoxy)triisopropylsilane (CAS 425638-79-5)
- 1-(2-Bromoethoxy)-4-(trifluoromethoxy)benzene (CAS 102793-81-7)
- 1-(2-Bromoethoxy)-2-trifluoromethoxybenzene (CAS 627902-11-8)
- Methyl 3-[4-(2-bromoethoxy)phenyl]prop-2-enoate (CAS 1807939-03-2)
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- 4-(2-Bromoethoxy)benzene-1-sulfonamide (CAS 125174-28-9)
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Recommended Standards
- 6-Bromotryptophan (CAS 33599-61-0)
- 7-(3-Bromopropoxy)-2H-chromen-2-one (CAS 69150-28-3)
- 6-Bromo-L-tryptophan (CAS 52448-17-6)
- 7-Bromo-2-ethyl-9-methoxy-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 2275753-22-3)
- Triphenylsulfonium (CAS 18393-55-0)
- 2-Chloro-4-(furan-2-yl)pyrimidine (CAS 124959-28-0)
- 2-Chloro-5-methylpyrimidine-4-carboxamide (CAS 2751646-32-7)
- (4-Fluoropyridin-2-yl)methanol (CAS 1222556-87-7)
- 3-(5-Hydroxy-1H-indazol-1-yl)benzoic acid (CAS 1505748-16-2)
- 4-Bromo-3-methylbenzoic Acid (CAS 7697-28-1)
- (R)-tert-Butyl 3-(2-fluoro-4-nitrophenoxy)pyrrolidine-1-carboxylate (CAS 1233859-96-5)
- (1H-Inden-1-yl)phosphonic acid (CAS 387361-84-4)
- 5-Nitro-2-((3,4,5-trimethoxyphenyl)amino)benzonitrile (CAS 876687-21-7)
- endo-Arg30-Semaglutide (CAS CATO-C4X-2226281)
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