methyl 5-methyl-3-oxo-3,4-dihydropyrazine-2-carboxylate hydrochloride CAS 2044744-91-2
| CAS No. | 2044744-91-2 |
| Molecular Formula | C7H8N2O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 204.61 g/mol gives methyl 5-methyl-3-oxo-3,4-dihydropyrazine-2-carboxylate hydrochloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
methyl 5-methyl-3-oxo-3,4-dihydropyrazine-2-carboxylate hydrochloride (CAS 2044744-91-2) is a high-purity analytical reference standard with the molecular formula C7H8N2O3HCl and a molecular weight of 204.61 g/mol.
The molecular framework of methyl 5-methyl-3-oxo-3,4-dihydropyrazine-2-carboxylate hydrochloride (C7H8N2O3HCl) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 methyl 5-methyl-3-oxo-3,4-dihydropyrazine-2-carboxylate hydrochloride 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 | C7H8N2O3 HCl |
| Molecular Weight | 204.61 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- (2E)-3-[5-(2,4-Dichlorophenyl)furan-2-yl]-N-phenylprop-2-enamide (CAS 400084-92-6)
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- 5,6-Dihydrocyclopenta[c][1,2]dithiole-3(4H)-thione (CAS 14085-33-7)
- (3R)-4-(3-isopropoxyphenyl)-1,3,4-trimethylpiperidine (CAS 1431704-21-0)
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- N-(4-(2-Amino-2-oxoethyl)thiazol-2-yl)isobutyramide (CAS 1197536-99-4)
- 1-(2-Hydroxyethyl)-6-oxo-1,6-dihydropyridazine-3-carboxylic acid (CAS 1021245-58-8)
- Liraglutide Impurity 22 (CAS 536721-25-2)
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