Methyl 5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate CAS 86625-25-4
| CAS No. | 86625-25-4 |
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Methyl 5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate (CAS 86625-25-4), a certified reference material (molecular formula C5H6N2O3, MW 142.11 g/mol) for analytical method development and quality control.
The molecular framework of Methyl 5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate (C5H6N2O3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), Methyl 5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate 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 | C5H6N2O3 |
| Molecular Weight | 142.11 g/mol |
| 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 |
| CAS Registry Year (est.) | 1981 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Methyl 5-methyl-1,3,4-oxadiazole-2-carboxylate (CAS 37641-35-3)
- Methyl 5-oxo-4,5-dihydro-1h-pyrazole-3-carboxylate (CAS 79746-67-1)
- Methyl 5-aminooxazole-4-carboxylate (CAS 63820-04-2)
- Muconic acid (CAS 505-70-4)
- 4-(tert-Butyl)-3-nitrobenzoic acid (CAS 59719-78-7)
- N-allyl-4-((2'-methyl-[1,1'-biphenyl]-2-yl)methyl)piperidine-4-carboxamide (CAS 1361114-93-3)
- (1R,4R)-2,2-Dimethoxy-1,7,7-trimethylbicyclo[2.2.1]heptane (CAS 109280-15-1)
- N-(5-Morpholino-2-oxoindolin-6-yl)acetamide (CAS 925702-41-6)
- 4'-(Tert-butyl)-2,6-dimethyl-[1,1'-biphenyl]-4-ol (CAS 906101-33-5)
- l-Leucyl-d-valine (CAS 17665-00-8)
- 2-Amino-7-methyl-4-(3-nitrophenyl)-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile (CAS 265315-70-6)
- 5-Methylbicyclo[3.3.1]Nonane-1-carboxamide (CAS 256954-89-9)
- (R)-4-(((benzyloxy)carbonyl)amino)-2-hydroxybutanoic acid (CAS 42491-77-0)
- Antistasin-Related Peptide (CAS 161561-46-2)
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