4-([1,1'-Biphenyl]-4-ylethynyl)benzaldehyde CAS 475115-52-7
| CAS No. | 475115-52-7 |
| Molecular Formula | C21H14O |
| Molecular Weight | 282.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-([1,1'-Biphenyl]-4-ylethynyl)benzaldehyde (CAS 475115-52-7), molecular formula C21H14O and molecular weight 282.34 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-([1,1'-Biphenyl]-4-ylethynyl)benzaldehyde (C21H14O) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 282.34 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
As a certified reference material (CRM), 4-([1,1'-Biphenyl]-4-ylethynyl)benzaldehyde 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 | C21H14O |
| Molecular Weight | 282.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Biphenyl Standards
- 2-([1,1'-Biphenyl]-4-ylethynyl)benzaldehyde (CAS 1017235-21-0)
- 2-([1,1'-Biphenyl]-4-yl)quinoxaline (CAS 17286-67-8)
- 6-(4-Biphenyl)-6-oxohexanoic acid (CAS 5366-53-0)
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- 3-([1,1'-Biphenyl]-4-yl)-2-acetamidopropanoic acid (CAS 63024-50-0)
- 1-(Biphenyl-4-yl)isoquinoline (CAS 110746-63-9)
Recommended Standards
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- 5-Ethynyl-4-fluoropyridin-2-amine (CAS 1802022-30-5)
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- 7-Bromo-3-fluoro-2-quinolinamine (CAS 2086770-16-1)
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