3-Chloroquinoxaline-2-carboxamide CAS 40254-88-4
| CAS No. | 40254-88-4 |
| Molecular Formula | C9H6ClN3O |
| Molecular Weight | 207.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 3-Chloroquinoxaline-2-carboxamide (CAS 40254-88-4), a certified reference material (molecular formula C9H6ClN3O, MW 207.62 g/mol) for analytical method development and quality control.
3-Chloroquinoxaline-2-carboxamide (C9H6ClN3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C9H6ClN3O |
| Molecular Weight | 207.62 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloroquinoxaline Standards
- 2-Chloroquinoxaline-6-carboxylic acid (CAS 1427067-33-1)
- 8-Chloroquinoxaline-6-carboxylic acid (CAS 1448852-99-0)
- 3-Chloroquinoxaline-2-carboxylic acid (CAS 20254-76-6)
- 5-Chloroquinoxaline-2-carboxylic acid (CAS 2417722-77-9)
- 6-Chloroquinoxaline-2,3-dicarbonitrile (CAS 72114-24-0)
- 6-Chloroquinoxaline-2,3-diol (CAS 6639-79-8)
- 6-chloroquinoxaline-2-carboxylic acid (CAS 29821-63-4)
- 6-Chloroquinoxaline-2,3-diamine (CAS 52312-40-0)
Recommended Standards
- 3-(6-Chloro-9H-purin-9-yl)propanenitrile (CAS 4244-40-0)
- 4-(3-Chlorophenyl)-1,3,5-triazin-2(1H)-one (CAS 61709-03-3)
- 3-(2-chloropyrimidin-4-yl)pyrazin-2-amine (CAS 2102412-80-4)
- 4-(4-Chlorophenyl)-1,3,5-triazin-2(1H)-one (CAS 61709-02-2)
- tert-Butyl 6-bromo-4-(difluoromethyl)-1H-indazole-1-carboxylate (CAS 2173991-81-4)
- N-(2-chlorophenyl)-4-(4-(3,4-dichlorophenyl)thiazol-2-yl)benzamide (CAS 338408-22-3)
- 2-(2-Fluoro-6-methoxy-4-(trifluoromethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2890194-34-8)
- N-(4-Bromophenyl)ethanesulfonamide (CAS 57616-20-3)
- (2-Chlorothiazol-5-yl)methanamine hydrochloride (CAS 153471-67-1)
- 2-Chloro-N-(3-chlorophenyl)-5-(N,N-diethylsulfamoyl)benzamide (CAS 1153537-12-2)
- (E)-N-[(4-Methylphenyl)methyl]-N'-phenyl(methylsulfanyl)methanimidamide (CAS 400078-35-5)
- 2-(2,6-difluorophenyl)cyclopropane-1-carboxylic acid (CAS 1157561-48-2)
- (E)-8-Ethoxy-7-(prop-1-en-1-yl)quinoline (CAS 67818-51-3)
- Semaglutide impurity 215 (CAS CATO-C4X-2226215)
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