3-Methyl-2-oxo-1,2-dihydroquinoxaline-6-carboxylic acid CAS 103752-83-6
| CAS No. | 103752-83-6 |
| Molecular Formula | C10H8N2O3 |
| Molecular Weight | 204.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Methyl-2-oxo-1,2-dihydroquinoxaline-6-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.
3-Methyl-2-oxo-1,2-dihydroquinoxaline-6-carboxylic acid (CAS 103752-83-6), molecular formula C10H8N2O3 and molecular weight 204.18 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Methyl-2-oxo-1,2-dihydroquinoxaline-6-carboxylic acid (C10H8N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 204.18 g/mol, it falls into the medium-molecular-weight range. 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 | C10H8N2O3 |
| Molecular Weight | 204.18 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 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Methyl 2-oxo-1,2-dihydroquinazoline-6-carboxylate (CAS 1036755-95-9)
- 7-Acetoxycoumarin (CAS 10387-49-2)
- Methyl 2-oxo-1,2-dihydroquinazoline-4-carboxylate (CAS 103505-59-5)
- 3-methyl-4-oxo-4H-chromene-2-carboxylic acid (CAS 104094-15-7)
- 2-Ethyl-5-(trifluoromethyl)benzenamine (CAS 1369923-98-7)
- 3-Cyclopropoxy-5-(dimethylamino)isonicotinamide (CAS 1243408-98-1)
- 2-(2,5-Dimethoxyphenyl)-4-pentyn-2-ol (CAS 2006278-41-5)
- Ethyl 2-fluoro-5-propoxybenzoate (CAS 2635937-71-0)
- 2-NP-SCA-13C,15N3 (CAS 1958113-22-8)
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- 4-Hydroxy-2-(pyridin-3-yl)pyrimidine-5-carboxylic acid (CAS 56406-46-3)
- 6-Chloro-8-fluoroimidazo[1,2-a]pyridine-2-carboxylic acid (CAS 1427376-71-3)
- 2-Amino-4-chloro-7-(2-C-methyl-β-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidine (CAS 443642-40-8)
- Tau Peptide (274-288) trifluoroacetate salt (CAS 330456-39-8)
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