1,3-Diphenyl-4-(2-(p-tolyl)hydrazono)-1H-pyrazol-5(4H)-one CAS 6528-22-9
| CAS No. | 6528-22-9 |
| Molecular Formula | C22H18N4O |
| Molecular Weight | 354.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1,3-Diphenyl-4-(2-(p-tolyl)hydrazono)-1H-pyrazol-5(4H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
1,3-Diphenyl-4-(2-(p-tolyl)hydrazono)-1H-pyrazol-5(4H)-one (CAS 6528-22-9), molecular formula C22H18N4O and molecular weight 354.40 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1,3-Diphenyl-4-(2-(p-tolyl)hydrazono)-1H-pyrazol-5(4H)-one (C22H18N4O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 354.40 g/mol, it falls into the moderately-high-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C22H18N4O |
| Molecular Weight | 354.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 4 |
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Recommended Standards
- 1-(5-(2-Hydroxyphenyl)-1,3-diphenyl-1H-pyrazol-4-yl)ethanone (CAS 21417-84-5)
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- 1-(3-Methylphenyl)-5-(4-phenylphenyl)-1h-pyrazole-3-carboxylic acid (CAS 955964-50-8)
- 1,4-Bis((2-hydroxypropyl)amino)anthracene-9,10-dione (CAS 72705-38-5)
- 1,2,3,5,6,7,8,9-Octahydro-4H-cyclopenta[c]quinolin-4-one (CAS 59663-81-9)
- Methyl decahydroquinoline-4-carboxylate (CAS 144817-87-8)
- 1-Aminocyclohexanecarboxylic Acid (CAS 2756-85-6)
- [1-(morpholin-4-yl)cyclopentyl]methanamine (CAS 444666-61-9)
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