2,3-Dichloroquinoxaline-6-carboxylic acid CAS 17880-88-5
| CAS No. | 17880-88-5 |
| Molecular Formula | C9H4Cl2N2O2 |
| Molecular Weight | 243.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,3-Dichloroquinoxaline-6-carboxylic acid (CAS 17880-88-5) is a high-purity analytical reference standard with the molecular formula C9H4Cl2N2O2 and a molecular weight of 243.05 g/mol.
The molecular framework of 2,3-Dichloroquinoxaline-6-carboxylic acid (C9H4Cl2N2O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 2,3-Dichloroquinoxaline-6-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H4Cl2N2O2 |
| Molecular Weight | 243.05 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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 DMSO, DMF, methanol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloroquinoxaline Standards
- 2,3-Dichloroquinoxaline-5-carboxylic acid (CAS 933726-33-1)
- 2,3-Dichloroquinoxaline-6,7-diol (CAS 1790-94-9)
- 6,7-Dichloroquinoxaline-2,3(1H,4H)-dione (CAS 25983-13-5)
- 6,7-Dichloroquinoxaline-2,3-diamine (CAS 192075-86-8)
- Methyl 2,3-dichloroquinoxaline-6-carboxylate (CAS 108258-54-4)
- Methyl 2,3-dichloroquinoxaline-5-carboxylate (CAS 1643354-85-1)
- 6,7-Dichloroquinoxaline-5,8-dione (CAS 102072-82-2)
- 2,3-Dichloroquinoxaline-5-carbonyl chloride (CAS 1919-39-7)
Recommended Standards
- 5-Bromo-2,2-difluoro-1,3-benzodioxole 5-bromo-2,2-difluoro-2h-1,3-benzodioxole 5-bromo-2,2-difluoro-benzo[1,3]dioxole 5-bromo-2,2-difluorobenzodioxole 5-bromo2,2-difluoro-1,3-benzodioxole 33070-32-5 (CAS 33070-32-5)
- Salbutamol Impurity 143 (CAS 2262385-78-2)
- Methyl 4-bromo-3-formylbenzoate (CAS 858124-35-3)
- Salbutamol Impurity 146 (CAS 124658-76-0)
- [(2-methoxyphenyl)carbamoyl]formic acid (CAS 57727-23-8)
- 4-Bromo-5-fluoro-3-nitropyridin-2-ol (CAS 884495-02-7)
- Methyl 2-(3,4-dihydroquinolin-1(2H)-yl)acetate (CAS 17133-54-9)
- 3-Ethoxy-2,6-difluoro-DL-phenylalanine (CAS 1260007-97-3)
- 2-Bromo-N-[2-(diethylamino)ethyl]acetamide (CAS 1138442-93-9)
- 2-((Carboxymethyl)amino)benzoic acid (CAS 612-42-0)
- n-(1-Amino-2-methylpropan-2-yl)-3-methylbutanamide (CAS 1339699-73-8)
- (3Z)-3-{[(2,4-dimethylphenyl)amino]methylidene}-1,3-dihydro-2-benzothiophen-1-one (CAS 1164490-62-3)
- 4-amino-N-(3-chloro-4-fluorophenyl)-2-methoxybenzene-1-sulfonamide (CAS 1095012-62-6)
- Acetyl-Tau Peptide (273-284) amide trifluoroacetate salt (CAS 1684399-52-7)
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