5-Methyl-4-[(4-nitroanilino)methylene]-2-phenyl-2,4-dihydro-3H-pyrazol-3-one CAS 68538-00-1
| CAS No. | 68538-00-1 |
| Molecular Formula | C17H14N4O3 |
| Molecular Weight | 322.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 322.32 g/mol gives 5-Methyl-4-[(4-nitroanilino)methylene]-2-phenyl-2,4-dihydro-3H-pyrazol-3-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Methyl-4-[(4-nitroanilino)methylene]-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (CAS 68538-00-1), molecular formula C17H14N4O3 and molecular weight 322.32 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 5-Methyl-4-[(4-nitroanilino)methylene]-2-phenyl-2,4-dihydro-3H-pyrazol-3-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 322.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Methyl-4-[(4-nitroanilino)methylene]-2-phenyl-2,4-dihydro-3H-pyrazol-3-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.
Physical & Chemical Properties
| Molecular Formula | C17H14N4O3 |
| Molecular Weight | 322.32 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 4 |
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Why CATO?
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