5-Methyl-4-((3-methyl-5-oxo-1-phenyl-1H-pyrazol-4(5H)-ylidene)methyl)-2-phenyl-1H-pyrazol-3(2H)-one CAS 15900-11-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 15900-11-5 |
| Molecular Formula | C21H18N4O2 |
| Molecular Weight | 358.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methyl-4-((3-methyl-5-oxo-1-phenyl-1H-pyrazol-4(5H)-ylidene)methyl)-2-phenyl-1H-pyrazol-3(2H)-one (CAS 15900-11-5) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C21H18N4O2. Molecular weight: 358.39 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C21H18N4O2 |
| Molecular Weight | 358.39 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 155836-29-6 (-)-dehydrodiconiferyl alcohol (-)-DCA 4-{(2R,3S)-3-(hydroxymethyl)-5-[(1E)-3-hydroxyprop-1-en-1-yl]-7-methoxy-2,3-dihydro-1-benzofuran-2-yl}-2-methoxyphenol (2R)-5-[(E)-3-Hydroxy-1-propenyl]-2,3-dihydro-2beta-(4-hydroxy-3-methoxyphenyl)-7-methoxybenzofuran-3alpha-methanol 7-Methoxy-5-[(E)-3-hydroxy-1-propenyl]-2beta-(3-methoxy-4-hydroxyphenyl)-2,3-dihydrobenzofuran-3alpha-methanol (2R,3S)-dehydrodiconiferyl alcohol (7R,8S)-dehydrodiconiferyl alcohol (-)-(2R,3S)-dehydrodiconiferyl alcohol CHEBI:70467 (CAS 155836-29-6)
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- Semaglutide impurity 331 (CAS CATO-C4X-2226231)
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