2-Methyl-2’-(diphenylphosphino)biphenyl CAS 402822-72-4
| CAS No. | 402822-72-4 |
| Molecular Formula | C25H21P |
| Molecular Weight | 352.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Methyl-2’-(diphenylphosphino)biphenyl (CAS 402822-72-4), molecular formula C25H21P and molecular weight 352.41 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to organophosphorus functionality, a polycyclic aromatic system, 2-Methyl-2’-(diphenylphosphino)biphenyl is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 352.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C25H21P |
| Molecular Weight | 352.41 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 |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Methyl Standards
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Recommended Standards
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- 2-(5-Chloro-2-methoxyphenyl)-2-fluoroacetic acid (CAS 1536254-17-7)
- 5-Nitropyridine-3-sulfonyl chloride (CAS 605653-17-6)
- Methyl 3-bromo-4-(2,2,2-trifluoroacetamido)benzoate (CAS 884302-70-9)
- 3-Amino-3-(4-isobutoxy-3-methoxyphenyl)-propanoic acid (CAS 902745-25-9)
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- Insulin Degludec Impurity 12 (CAS CATO-C4X-215712)
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