4-Vinylbenzoyl chloride CAS 1565-41-9
| CAS No. | 1565-41-9 |
| Molecular Formula | C9H7ClO |
| Molecular Weight | 166.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Vinylbenzoyl chloride.
4-Vinylbenzoyl chloride (CAS 1565-41-9), molecular formula C9H7ClO and molecular weight 166.60 g/mol, is a CATO reference standard with documented purity and traceability.
4-Vinylbenzoyl chloride (C9H7ClO) contains a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H7ClO |
| Molecular Weight | 166.60 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Recommended Standards
- 2-Chloro-1-ethynyl-4-methoxybenzene (CAS 153440-68-7)
- 1-Chloro-2-ethynyl-3-methoxybenzene (CAS 1565104-18-8)
- bicyclo[4.2.0]octa-1(6),2,4-triene-7-carbonyl chloride (CAS 1473-47-8)
- 2-Chloro-2,3-dihydro-1h-inden-1-one (CAS 1579-14-2)
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