[1,1-Biphenyl]-2,2-dicarbonyl dichloride CAS 7535-15-1
| CAS No. | 7535-15-1 |
| Molecular Formula | C14H8Cl2O2 |
| Molecular Weight | 279.12 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 [1,1-Biphenyl]-2,2-dicarbonyl dichloride.
[1,1-Biphenyl]-2,2-dicarbonyl dichloride (CAS 7535-15-1), molecular formula C14H8Cl2O2 and molecular weight 279.12 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, [1,1-Biphenyl]-2,2-dicarbonyl dichloride (C14H8Cl2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 279.12 g/mol, it falls into the medium-molecular-weight range. 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).
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.
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 | C14H8Cl2O2 |
| Molecular Weight | 279.12 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, keep tightly closed to prevent evaporation |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- Diethyl (4-acetylphenyl)phosphonate (CAS 25944-71-2)
- 1-(2-Chlorophenoxy)-3-(phenylsulfonyl)propan-2-ol (CAS 478079-89-9)
- Mycophenolic Acid-d3 (CAS 1185242-90-3)
- Dimethyldioxirane (CAS 74087-85-7)
- 4-Chlorophenyl m-tolylcarbamate (CAS 96445-19-1)
- Tetrabenazine Impurity 3 (CAS 99672-64-7)
- Cis-1-methyl-1,2,3,4-tetrahydroisoquinoline-4,6,7-triol (CAS 139254-75-4)
- 2-(Chloromethyl)-3-(difluoromethyl)-5-nitropyridine (CAS 1803693-30-2)
- Semaglutide impurity 235 (CAS CATO-C4X-2226235)
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