4-Acetyl-3-methyl-1-(p-tolyl)-1H-pyrazol-5(4H)-one CAS 73097-75-3
| CAS No. | 73097-75-3 |
| Molecular Formula | C13H14N2O2 |
| Molecular Weight | 230.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 230.26 g/mol gives 4-Acetyl-3-methyl-1-(p-tolyl)-1H-pyrazol-5(4H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Acetyl-3-methyl-1-(p-tolyl)-1H-pyrazol-5(4H)-one (CAS 73097-75-3), molecular formula C13H14N2O2 and molecular weight 230.26 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Acetyl-3-methyl-1-(p-tolyl)-1H-pyrazol-5(4H)-one (C13H14N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 230.26 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 4-Acetyl-3-methyl-1-(p-tolyl)-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.
Physical & Chemical Properties
| Molecular Formula | C13H14N2O2 |
| Molecular Weight | 230.26 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 4-Acetyl-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one (CAS 40570-67-0)
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- 4-[(6-Methoxy-3-pyridyl)oxy]-3-methylaniline (CAS 871020-35-8)
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