Quinoxaline-5-carbonyl chloride CAS 717871-86-8
| CAS No. | 717871-86-8 |
| Molecular Formula | C9H5ClN2O |
| Molecular Weight | 192.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Quinoxaline-5-carbonyl chloride (CAS 717871-86-8) is a high-purity analytical reference standard with the molecular formula C9H5ClN2O and a molecular weight of 192.60 g/mol.
Based on its molecular formula C9H5ClN2O, Quinoxaline-5-carbonyl chloride contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 192.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), Quinoxaline-5-carbonyl chloride 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 | C9H5ClN2O |
| Molecular Weight | 192.60 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.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Quinoxaline Standards
- Quinoxaline-6-carbonyl chloride (CAS 258503-93-4)
- Quinoxaline, 6-chloro-2-methoxy- (CAS 104152-39-8)
- Quinoxaline-6-carbohydrazide (CAS 175204-23-6)
- Quinoxaline-2-carbohydrazide (CAS 54571-06-1)
- Methyl quinoxaline-5-carboxylate (CAS 6924-71-6)
- 3-Methyl-Quinoxaline-2-Carboxylic Acid (CAS 74003-63-7)
- Ethyl quinoxaline-2-carboxylate (CAS 7065-23-8)
- Ethyl quinoxaline-5-carboxylate (CAS 7044-09-9)
Recommended Standards
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- Dimethyl (Z)-3-chloropent-2-enedioate (CAS 66016-88-4)
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- 2-(2,6-Difluorophenyl)-1,2,3,4-tetrahydroquinolin-4-amine (CAS 1923082-46-5)
- 4,4,5,5-Tetramethyl-2-(1-(o-tolyl)vinyl)-1,3,2-dioxaborolane (CAS 2169318-18-5)
- (S)-3-((tert-butoxycarbonyl)amino)-2-(2,4-dichlorobenzyl)propanoic acid (CAS 1260603-90-4)
- Buddlejasaponin IVb (CAS 152580-79-5)
- 4-(2-Hydroxyethyl)-piperazin-1-carboxylic acid ethyl ester (CAS 14000-66-9)
- 4-(4-Heptylphenyl)-2-methyl-5-oxo-5H-indeno[1,2-b]pyridine-3-carbonitrile (CAS 439108-64-2)
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