8-Allyl-2-(5-bromothiophen-2-yl)-4H-chromen-4-one CAS 219771-92-3
| CAS No. | 219771-92-3 |
| Molecular Formula | C16H11BrO2S |
| Molecular Weight | 347.23 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.
8-Allyl-2-(5-bromothiophen-2-yl)-4H-chromen-4-one (CAS 219771-92-3), molecular formula C16H11BrO2S and molecular weight 347.23 g/mol, is a CATO reference standard with documented purity and traceability.
8-Allyl-2-(5-bromothiophen-2-yl)-4H-chromen-4-one (C16H11BrO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, a polycyclic aromatic system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C16H11BrO2S |
| Molecular Weight | 347.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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.) | 2019 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
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- 1-(Benzyloxy)-2-bromo-4-(trifluoromethyl)benzene (CAS 200956-32-7)
- (R)-2-Amino-1,1,2-triphenylethanol (CAS 79868-79-4)
- 2-(5-(4-Bromophenyl)-4-oxothieno[2,3-d]pyrimidin-3(4H)-yl)acetic acid (CAS 446830-87-1)
- 2-(1-Bromopropan-2-yl)-1,3-dioxolane (CAS 87373-70-4)
- 1-Chloro-3-(pyridin-4-yl)-2,7-naphthyridine (CAS 1211593-56-4)
- (4-Nitrobenzyl)hydrazine Dihydrochloride (CAS 2044707-11-9)
- 7-(3-(Trifluoromethyl)phenyl)pyrazolo[1,5-a]pyrimidine-3-carboxamide (CAS 115930-92-2)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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