1-Phenyl-1H-pyrazole-4,5-dione CAS 62349-56-8
| CAS No. | 62349-56-8 |
| Molecular Formula | C9H6N2O2 |
| Molecular Weight | 174.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1-Phenyl-1H-pyrazole-4,5-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 174.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO supplies 1-Phenyl-1H-pyrazole-4,5-dione (CAS 62349-56-8), a certified reference material (molecular formula C9H6N2O2, MW 174.16 g/mol) for analytical method development and quality control.
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.
CATO manufactures 1-Phenyl-1H-pyrazole-4,5-dione 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 | C9H6N2O2 |
| Molecular Weight | 174.16 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| 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.) | 1974 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 1-Methyl-4-(2,2,2-trifluoroethyl)benzene (CAS 50562-01-1)
- 1-Phenyl-1H-tetrazole-5-carbaldehyde (CAS 37468-67-0)
- 1-Methyl-3-(2,2,2-trifluoroethyl)benzene (CAS 50562-00-0)
- 2-(1H-Benzo[d]imidazol-2-yl)-2-oxoacetaldehyde (CAS 57354-39-9)
- Ethyl 2-amino-4-chloro-1H-imidazole-5-carboxylate (CAS 2091036-90-5)
- 4-((9H-Purin-6-yl)amino)benzamide (CAS 537666-96-9)
- Metoclopramide-d3 (CAS 1216522-89-2)
- Ethyl 2-(azetidin-3-yl)propanoate hydrochloride (CAS 2231674-03-4)
- 1,1'-(4-Methyl-1,3-phenylene)bis(1H-pyrrole-2,5-dione) (CAS 6422-83-9)
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- (4-Ethylphenyl)(m-tolyl)methanol (CAS 844683-29-0)
- (1R,3S)-3-((tert-butoxycarbonyl)amino)-1-isopropylcyclopentane-1-carboxylic acid (CAS 2380715-88-6)
- 1-(Thiophen-2-yl)but-3-yn-1-ol (CAS 38597-97-6)
- TRAF6 Control Peptide trifluoroacetate salt (CAS 852690-80-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com