1-Ethyl-5-oxo-2,5-dihydropyrazole-3-carboxylic Acid CAS 1783265-38-2
| CAS No. | 1783265-38-2 |
| Molecular Formula | C6H8N2O3 |
| Molecular Weight | 156.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-Ethyl-5-oxo-2,5-dihydropyrazole-3-carboxylic Acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-Ethyl-5-oxo-2,5-dihydropyrazole-3-carboxylic Acid (CAS 1783265-38-2) is a high-purity analytical reference standard with the molecular formula C6H8N2O3 and a molecular weight of 156.14 g/mol.
Based on its molecular formula C6H8N2O3, 1-Ethyl-5-oxo-2,5-dihydropyrazole-3-carboxylic Acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 156.14 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 | C6H8N2O3 |
| Molecular Weight | 156.14 g/mol |
| Appearance | Off-white to pale 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 methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Ethyl 1-hydroxy-1H-pyrazole-3-carboxylate (CAS 176385-39-0)
- (4-Methoxypyrazol-1-yl)-acetic acid (CAS 1784782-07-5)
- ethyl 2-cyano-2-formamidoacetate (CAS 1759-25-7)
- 1-(2-hydroxyethyl)-1H-1,2,3-triazole-4-carboxamide (CAS 1795430-31-7)
- 2-(2-Chlorophenyl)propanoic acid (CAS 2184-85-2)
- (R)-(4-Fluorophenyl)(3-hydroxypyrrolidin-1-yl)methanone (CAS 1568014-78-7)
- 3-Phenylcyclobutanecarboxylic acid (CAS 66016-28-2)
- Methyl 2-((3-ethoxy-2-hydroxybenzyl)amino)benzoate (CAS 1232792-18-5)
- 3-(2,3-Difluorophenyl)-2,2-dimethylpropanoic acid (CAS 1343431-02-6)
- n-(4-Bromo-3-methylphenyl)methanesulfonamide (CAS 149105-00-0)
- (4-(2-Chlorophenoxy)phenyl)methanaminehydrochloride (CAS 1170147-57-5)
- 3-((2-Chloro-6-fluorobenzyl)oxy)azetidine (CAS 1121605-81-9)
- 1-(5-Bromo-4-chlorothiophen-2-yl)ethan-1-one (CAS 123418-66-6)
- 915019-08-8 55R7RG342O Tertomotide [INN] Human telomerase reverse transcriptase (EC 2.7.7.49)-(611-626)-peptide (telomerase catalytic subunit fragment) Tertomotide UNII-55R7RG342O GV 1001 GV-1001 (CAS 915019-08-8)
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