7-Methylquinoxaline-6-carboxylic acid CAS 10351-82-3
| CAS No. | 10351-82-3 |
| Molecular Formula | C10H8N2O2 |
| Molecular Weight | 188.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
7-Methylquinoxaline-6-carboxylic acid (CAS 10351-82-3), molecular formula C10H8N2O2 and molecular weight 188.18 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H8N2O2, 7-Methylquinoxaline-6-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 188.18 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).
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 | C10H8N2O2 |
| Molecular Weight | 188.18 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 DMSO, DMF, methanol |
| 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.) | 1959 |
| Nitrogen Atoms | 2 |
Related Methylquinoxaline Standards
- 3-Methylquinoxaline-5-carboxylic acid (CAS 904813-39-4)
- N-methylquinoxaline-6-carboxamide (CAS 1343299-66-0)
- 3-methylquinoxaline-2-thiol (CAS 58773-29-8)
- 3-methylquinoxaline-6-carboxylic acid (CAS 155439-33-1)
- 2-methylquinoxaline-6-carboxylic acid (CAS 155439-35-3)
- 2-Methylquinoxaline-5,8-diol (CAS 108128-22-9)
- 2-Methylquinoxaline 1,4-Dioxide (CAS 6639-86-7)
- 2-Methylquinoxaline-5,6-diamine (CAS 103538-92-7)
Recommended Standards
- 3-Benzyl-1,2,4-oxadiazole-5-carbaldehyde (CAS 103499-30-5)
- 3-Methyl-5-nitroquinoline (CAS 103754-53-6)
- 3-Hydroxy-2-oxo-1,2,3,4-tetrahydroquinoline-7-carbonitrile (CAS 1033747-92-0)
- 10420-33-4 Acetylsuccinic acid dimethyl ester Dimethyl acetylsuccinate acetyl-butanedioicaciddimethylester acetyl-butanedioicacidimethylester butandioic acid acetyl-dimethylester butanedioic acid, acetyl-dimethyl ester dmas doimethyl acetylsuccinate (CAS 10420-33-4)
- 5-(3-Bromo-5-fluorophenyl)-1h-pyrazol-3-amine (CAS 1186653-50-8)
- Prothidathion (CAS 20276-83-9)
- 9-(1-Ethoxyethyl)-9H-purin-6-amine (CAS 29767-70-2)
- 4-(Isoquinolin-1-yl)benzoic acid (CAS 52947-18-9)
- 2,5-Dioxopyrrolidine-3-carboxylic acid (CAS 96905-69-0)
- Propofol Impurity 44 (CAS 83420-68-2)
- Diethyl methylphosphoramidate (CAS 6326-73-4)
- 2-Oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carbonitrile (CAS 1388047-42-4)
- 1-(5-(Azepane-1-carbonyl)-4-methylthiazol-2-yl)-3-(3-chlorophenyl)urea (CAS 942010-90-4)
- Liraglutide Impurity 21 TFA Salt (CAS CATO-C4X-199221)
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