1,4-Phenylenebis((4-chlorophenyl)methanone) CAS 22198-42-1
| CAS No. | 22198-42-1 |
| Molecular Formula | C20H12Cl2O2 |
| Molecular Weight | 355.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C20H12Cl2O2, 1,4-Phenylenebis((4-chlorophenyl)methanone) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 355.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 1,4-Phenylenebis((4-chlorophenyl)methanone) (CAS 22198-42-1), a certified reference material (molecular formula C20H12Cl2O2, MW 355.21 g/mol) for analytical method development and quality control.
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 | C20H12Cl2O2 |
| Molecular Weight | 355.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
Related Phenylenebis Standards
- 3,3'-(1,4-phenylenebis(azanediyl))bis(5,5-dimethylcyclohex-2-enone) (CAS 78431-57-9)
- 4,4'-(1,4-Phenylenebis(oxy))dibenzoic acid (CAS 13282-09-2)
- 4,4'-(1,2-Phenylenebis(oxy))dibenzoic acid (CAS 74294-25-0)
- 4,4'-(1,3-Phenylenebis(oxy))dibenzoic acid (CAS 77865-43-1)
- 4,4'-((1,4-Phenylenebis(methylene))bis(oxy))dibenzaldehyde (CAS 64621-41-6)
- 4,4'-(1,3-Phenylenebis(diazene-2,1-diyl))bis(benzene-1,3-diamine) (CAS 1052-38-6)
- 3,3'-(1,3-Phenylenebis(ethyne-2,1-diyl))dibenzoic acid (CAS 1224935-34-5)
- 4,4'-(1,2-Phenylenebis(ethyne-2,1-diyl))dibenzoic acid (CAS 1258419-74-7)
Recommended Standards
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- 2,7-Dichloro-1H-benzo[d]imidazole-6-carboxylic acid (CAS 1388070-54-9)
- 53440-12-3 1,2,3,4-Tetrahydro-2-naphthalenecarboxylic acid 1,2,3,4-tetrahydronaphthalene-2-carboxylic acid;Tetralin-2-carboxylic acid BCP26089 (CAS 53440-12-3)
- Orforglipron impurity 80 (CAS CATO-C4X-323480)
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- Isopropyl 2-amino-4-(2-chlorophenyl)-5-oxo-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (CAS 939889-15-3)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
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