(4E)-3-Phenyl-4-{[(thiophen-2-ylmethyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one CAS 240116-00-1
| CAS No. | 240116-00-1 |
| Molecular Formula | C15H13N3OS |
| Molecular Weight | 283.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 283.35 g/mol gives (4E)-3-Phenyl-4-{[(thiophen-2-ylmethyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(4E)-3-Phenyl-4-{[(thiophen-2-ylmethyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one (CAS 240116-00-1), molecular formula C15H13N3OS and molecular weight 283.35 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H13N3OS, (4E)-3-Phenyl-4-{[(thiophen-2-ylmethyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 283.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C15H13N3OS |
| Molecular Weight | 283.35 g/mol |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- (4-Aminophenyl)-(4-methanesulfonyl-piperazin-1-yl)-methanone (CAS 916737-91-2)
- (5E)-2-Mercapto-5-[(1-methyl-1H-pyrrol-2-yl)-methylene]-3-phenyl-3,5-dihydro-4H-imidazol-4-one (CAS 893345-42-1)
- (2-([(Cyclohexylamino)carbonyl]amino)-1,3-thiazol-4-yl)acetic acid (CAS 926238-24-6)
- (5-Mercapto-4-phenyl-4H-1,2,4-triazol-3-yl)(phenyl)methanol (CAS 21358-25-8)
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