4-Butyl-1-(4-hydroxyphenyl)-2-phenylpyrazolidine-3,5-dione hydrate CAS 76576-51-7
| CAS No. | 76576-51-7 |
| Molecular Formula | C19H20N2O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Butyl-1-(4-hydroxyphenyl)-2-phenylpyrazolidine-3,5-dione hydrate (CAS 76576-51-7) is a high-purity analytical reference standard with the molecular formula C19H20N2O3H2O and a molecular weight of 342.39 g/mol.
Based on its molecular formula C19H20N2O3H2O, 4-Butyl-1-(4-hydroxyphenyl)-2-phenylpyrazolidine-3,5-dione hydrate contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 342.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), 4-Butyl-1-(4-hydroxyphenyl)-2-phenylpyrazolidine-3,5-dione hydrate 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 | C19H20N2O3 H2O |
| Molecular Weight | 342.39 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 2 |
Related Butyl Standards
- 6-(2-Hydroxyphenyl)hexanoic acid (CAS 100257-13-4)
- 3-(2-Hydroxyphenyl)-5-(2-methoxyethyl)-1-methyltetrahydropyrrolo[3,4-c]pyrazole-4,6(1H,5H)-dione (CAS 1005099-98-8)
- 5-(2-Hydroxyphenyl)-3a-methyl-octahydropyrrolo[2,3-b]pyrrol-2-one (CAS 1005100-31-1)
- 4-hydroxyphenyl diiSopropyl phosphate (CAS 100524-86-5)
- (E)-7-(2-Hydroxyphenyl)-1-phenylhept-4-en-3-one (CAS 100667-52-5)
- 1-(4-Hydroxyphenyl)propane-1,2-dione (CAS 10087-36-2)
- 3-(4-Hydroxyphenyl)-2-[4-(trifluoromethoxy)benzoylamino]propanoic acid (CAS 1008918-81-7)
- Ethyl 2-(4-hydroxyphenyl)-2-(N-methylacetamido)acetate (CAS 1008946-23-3)
Recommended Standards
- N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)cyclohexyl)thiophene-3-carboxamide (CAS 1396800-37-5)
- N-Methyl-1-(3-propyl-1,2,4-oxadiazol-5-yl)-methanamine hydrochloride (CAS 1185295-15-1)
- 4-(6-Methyl-1,2,4,5-tetrazin-3-yl)benzylamine (CAS 1345955-28-3)
- PTH-Cysteic acid sodium salt (CAS 108321-85-3)
- 1-Chloro-3-methyl-2-pentylbenzo[4,5]imidazo[1,2-a]pyridine-4-carbonitrile (CAS 518018-37-6)
- Methyl 5-fluorobenzo[b]thiophene-3-carboxylate (CAS 1187931-42-5)
- 6-Cyclopropyl-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-4-carbohydrazide (CAS 886496-15-7)
- Benzyl (2,2-dimethylpent-4-en-1-yl)carbamate (CAS 886576-63-2)
- 5-Cyclopropyl-2-fluoro-4-methylpyridine (CAS 1428234-77-8)
- Anorexigenic Peptide (CAS 69275-10-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com