| CAS No. | 6009-31-0 |
| Molecular Formula | C19H21N3O3 |
| Molecular Weight | 339.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 339.39 g/mol gives 1-(3-Ethyl-5-hydroxy-5-(pyridin-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)-2-(4-methoxyphenyl)ethan-1-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(3-Ethyl-5-hydroxy-5-(pyridin-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)-2-(4-methoxyphenyl)ethan-1-one (CAS 6009-31-0) is a high-purity analytical reference standard with the molecular formula C19H21N3O3 and a molecular weight of 339.39 g/mol.
1-(3-Ethyl-5-hydroxy-5-(pyridin-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)-2-(4-methoxyphenyl)ethan-1-one (C19H21N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 1-(3-Ethyl-5-hydroxy-5-(pyridin-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)-2-(4-methoxyphenyl)ethan-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 | C19H21N3O3 |
| Molecular Weight | 339.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |