4'-Chloroacetophenone CAS 99-91-2
| CAS No. | 99-91-2 |
| Molecular Formula | C8H7ClO |
| Molecular Weight | 154.59 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.
4'-Chloroacetophenone (CAS 99-91-2), molecular formula C8H7ClO and molecular weight 154.59 g/mol, is a CATO reference standard with documented purity and traceability.
4'-Chloroacetophenone (C8H7ClO) 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).
As a certified reference material (CRM), 4'-Chloroacetophenone 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.
Physical & Chemical Properties
| Molecular Formula | C8H7ClO |
| Molecular Weight | 154.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Chloroacetophenone Standards
- 2'-Chloroacetophenone (CAS 2142-68-9)
- 2-Chloroacetophenone (CAS 532-27-4)
- 3-Chloroacetophenone (CAS 99-02-5)
- 4′-Chloroacetophenone-2′,3′,5′,6′-d4 (CAS 284474-50-6)
- 4′-Chloroacetophenone-d7 (CAS 1174565-85-5)
- p-Chloroacetophenone oxime (CAS 1956-39-4)
- 2'-Chloroacetophenone semicarbazone (CAS 120445-83-2)
- 3'-Chloroacetophenone semicarbazone (CAS 14760-30-6)
Recommended Standards
- 2-(3-chlorophenyl)acetaldehyde 2-(3-chlorophenyl)ethanal 41904-40-9 A825690 (CAS 41904-40-9)
- Phenylacetyl Chloride (CAS 103-80-0)
- 2-(4-Chlorophenyl)oxirane (CAS 2788-86-5)
- (S)-3-Chlorostyrene oxide (CAS 115648-90-3)
- 5-bromo-3-methyl-2-(1H-pyrazol-1-yl)pyridine hydrochloride (CAS 1909318-97-3)
- 1,1-Dibromo-1-chlorotrifluoroethane (CAS 754-17-6)
- 2-(Aminomethyl)-n-(propan-2-yl)aniline (CAS 145429-39-6)
- Methyl 3-(3-carbamoylphenyl)benzoate (CAS 1820618-86-7)
- 1-hydroxy-2,2,5,5-tetramethylpyrrolidine-3-carboxylic acid (CAS 96623-58-4)
- (2S,3S,5R)-5-(4-Amino-2-oxo-1,3,5-triazin-1(2H)-yl)-2-((benzoyloxy)methyl)tetrahydrofuran-3-yl benzoate (CAS 324018-62-4)
- 2-(Isoxazol-5-yl)-N,N-dimethylacetamide (CAS 930773-35-6)
- 2-((3,6-Dichloropyridazin-4-yl)amino)-3,3-dimethylbutan-1-ol (CAS 1858187-90-2)
- 2-chloro-N-(4-ethyl-2,5-dioxo-4-phenylimidazolidin-1-yl)acetamide (CAS 923685-65-8)
- Glucagon Monohydrochloride (CAS 28270-04-4)
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