3,5-Diphenyl-1-(4-biphenylyl)formazan CAS 21520-85-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21520-85-4 |
| Molecular Formula | C25H20N4 |
| Molecular Weight | 376.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Diphenyl-1-(4-biphenylyl)formazan (CAS 21520-85-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C25H20N4. Molecular weight: 376.45 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C25H20N4 |
| Molecular Weight | 376.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 4 |
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