7-Chloro-5-methylquinoxaline CAS 532934-94-4
| CAS No. | 532934-94-4 |
| Molecular Formula | C9H7ClN2 |
| Molecular Weight | 178.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Chloro-5-methylquinoxaline is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7-Chloro-5-methylquinoxaline (CAS 532934-94-4), molecular formula C9H7ClN2 and molecular weight 178.62 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 7-Chloro-5-methylquinoxaline (C9H7ClN2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, 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. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 7-Chloro-5-methylquinoxaline 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 | C9H7ClN2 |
| Molecular Weight | 178.62 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 5-chloro-2-methyl-1,6-naphthyridine (CAS 1001754-84-2)
- 3-Chloro-6,7-dihydro-5H-cyclopenta[c]pyridine-4-carbonitrile (CAS 103589-67-9)
- 5-Chloro-1-phenyl-1H-imidazole (CAS 104672-26-6)
- 2-Chloro-3-methyl-1,5-naphthyridine (CAS 1049030-27-4)
- 6-Chloro-3-quinolinamine (CAS 1051372-60-1)
- 6-Chloro-4-methylquinazoline (CAS 1071752-93-6)
- 2-Chloro-3-methyl-1,7-naphthyridine (CAS 1105191-93-2)
- 5-Chloro-1-phenyl-1H-pyrazole (CAS 1127-84-0)
Recommended Standards
- 7-chloro-5-methyl-1,6-naphthyridine (CAS 2244683-53-0)
- 7-Chloroisoquinolin-3-amine (CAS 82117-29-1)
- 7-Chloro-4-methylcinnoline (CAS 89770-40-1)
- 7-Chloroisoquinolin-5-amine (CAS 608515-70-4)
- 3-Cyclopropoxy-2-ethylisonicotinonitrile (CAS 1243395-51-8)
- (R)-2-(Methoxymethyl)piperidine hydrochloride (CAS 688809-99-6)
- 6-(Tert-butyl)-2-((2-chlorobenzyl)thio)-4-phenyl-5,6,7,8-tetrahydroquinoline-3-carbonitrile (CAS 309278-44-2)
- 2-Methyl-N-(2-(thiophen-3-yl)ethyl)propane-1-sulfonamide (CAS 1251625-02-1)
- 2,4-Dimethylbenzamide (CAS 73258-94-3)
- 2-Cyclohexen-1-ylethylisocyanide (CAS 172223-58-4)
- 2,2'-Oxybis(N,N-dioctylacetamide) (CAS 342794-43-8)
- 4-(tert-Butyl)-1-naphthoic acid (CAS 872798-31-7)
- 1-(2-Bromophenyl)ethane-1-sulfonamide (CAS 1249973-36-1)
- (10-31)Semaglutide (CAS CATO-C4X-2226283)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com