| CAS No. | 14575-25-8 |
| Molecular Formula | C21H21NO |
| Molecular Weight | 303.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (E)-1-Phenyl-4-((E)-1,3,3-trimethylindolin-2-ylidene)but-2-en-1-one.
(E)-1-Phenyl-4-((E)-1,3,3-trimethylindolin-2-ylidene)but-2-en-1-one (CAS 14575-25-8) is a high-purity analytical reference standard with the molecular formula C21H21NO and a molecular weight of 303.40 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, (E)-1-Phenyl-4-((E)-1,3,3-trimethylindolin-2-ylidene)but-2-en-1-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 303.40 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).
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 (E)-1-Phenyl-4-((E)-1,3,3-trimethylindolin-2-ylidene)but-2-en-1-one 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 | C21H21NO |
| Molecular Weight | 303.40 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |