| CAS No. | 4181-05-9 |
| Molecular Formula | C19H33NO |
| Molecular Weight | 291.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 4-(Diphenylamino)benzaldehyde 4181-05-9 Benzaldehyde, 4-(diphenylamino)- NSC-156558 NSC156558 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 291.47 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
4-(Diphenylamino)benzaldehyde 4181-05-9 Benzaldehyde, 4-(diphenylamino)- NSC-156558 NSC156558 (CAS 4181-05-9), molecular formula C19H33NO and molecular weight 291.47 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 4-(Diphenylamino)benzaldehyde 4181-05-9 Benzaldehyde, 4-(diphenylamino)- NSC-156558 NSC156558 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C19H33NO |
| Molecular Weight | 291.47 g/mol |
| Appearance | Off-white to pale 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |