(R)-Methyl 3-methyl-2-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate CAS 1956435-51-0
| CAS No. | 1956435-51-0 |
| Molecular Formula | C11H12N2O3 |
| Molecular Weight | 220.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (R)-Methyl 3-methyl-2-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate.
(R)-Methyl 3-methyl-2-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate (CAS 1956435-51-0), molecular formula C11H12N2O3 and molecular weight 220.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H12N2O3, (R)-Methyl 3-methyl-2-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate 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 220.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 (R)-Methyl 3-methyl-2-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate 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 | C11H12N2O3 |
| Molecular Weight | 220.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 2 |
Recommended Standards
- N,2,3-Trimethyl-4-oxo-4,5-dihydrofuro[3,2-c]pyridine-7-carboxamide (CAS 1956383-33-7)
- (S)-Methyl 3-methyl-2-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate (CAS 1956437-81-2)
- 2-(2,3-dihydro-1H-inden-1-yl)propanedioic acid (CAS 195071-06-8)
- 7-(2-Methoxyethoxy)quinazolin-4(1H)-one (CAS 196194-86-2)
- 4-(2-Chloro-4-ethoxyphenyl)phenol (CAS 1261910-60-4)
- 1-(Piperidin-4-yl)-5-(trifluoromethyl)-1H-benzo[d][1,2,3]triazole hydrochloride (CAS 306935-37-5)
- 3-(Thiophen-2-ylthio)butanoic acid (CAS 120279-20-1)
- N,N-Diphenyl-2-((5-(m-tolyl)-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 332387-69-6)
- 6-Chloro-1-ethyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 1443286-78-9)
- 8-Chloro-2,3,4,5-tetrahydro-1H-benzo[4,5]imidazo[1,2-d][1,4]diazepine (CAS 135875-11-5)
- Benzyl(m-tolyl)sulfane (CAS 5023-61-0)
- 3-Ethyl-3-methylpentane (CAS 1067-08-9)
- 3-Methyl-[1,2]oxazolo[5,4-b]pyridine-5-carbohydrazide (CAS 1097794-89-2)
- Tirzepatide Impurity 37 (CAS CATO-C4X-324037)
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