2',3'-Dichloroacetophenone CAS 56041-57-7
| CAS No. | 56041-57-7 |
| Molecular Formula | C8H6Cl2O |
| Molecular Weight | 189.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 189.04 g/mol gives 2',3'-Dichloroacetophenone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2',3'-Dichloroacetophenone (CAS 56041-57-7), molecular formula C8H6Cl2O and molecular weight 189.04 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2',3'-Dichloroacetophenone is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 189.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C8H6Cl2O |
| Molecular Weight | 189.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 1973 |
| Halogen Content | Cl-containing |
Related Dichloroacetophenone Standards
Recommended Standards
- Ketoconazole Impurity 16 (CAS 2234-16-4)
- Econazole Impurity 7 (CAS 13692-15-4)
- 1-(3,4-Dichlorophenyl)ethanone (CAS 2642-63-9)
- 2',5'-Dichloroacetophenon (CAS 2476-37-1)
- (S)-1-(3,4-dichlorophenyl)-2-methylpropan-1-amine (CAS 1212884-21-3)
- 4-(Hydroxymethyl)isoquinoline (CAS 73048-60-9)
- 1,3-Dioxo-2-(4-phenoxyphenyl)isoindoline-5-carboxylic acid (CAS 306763-60-0)
- Thiophene-3-carboximidamide (CAS 54610-81-0)
- 5-Nitro-N4-(3-(trifluoromethyl)phenyl)pyrimidine-2,4-diamine (CAS 351858-26-9)
- Ethyl 2-(4-(4-fluorophenyl)-3-methyl-1H-pyrazolo[3,4-b]pyridin-1-yl)acetate (CAS 1011397-31-1)
- 2-(Quinolin-6-yl)acetonitrile (CAS 103983-94-4)
- 6-Bromo-4,4-dimethyl-1,4-dihydroisoquinolin-3(2h)-one (CAS 1780774-37-9)
- 9,10-Bis[N-(p-tolyl)anilino]anthracene (CAS 190974-21-1)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
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