6-Chloro-2-ethynylquinoxaline CAS 335159-62-1
| CAS No. | 335159-62-1 |
| Molecular Formula | C10H5ClN2 |
| Molecular Weight | 188.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 6-Chloro-2-ethynylquinoxaline (CAS 335159-62-1), a certified reference material (molecular formula C10H5ClN2, MW 188.61 g/mol) for analytical method development and quality control.
Structurally, 6-Chloro-2-ethynylquinoxaline (C10H5ClN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 188.61 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 6-Chloro-2-ethynylquinoxaline 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 | C10H5ClN2 |
| Molecular Weight | 188.61 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 6-(Chloromethyl)-2-(methoxymethyl)pyrimidin-4(3H)-one (CAS 76873-60-4)
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- tert-Butyl (2R)-4,4-diethoxy-2-(hydroxymethyl)-piperidine-1-carboxylate (CAS 1212295-83-4)
- N-(1-(Naphthalen-1-yl)vinyl)acetamide (CAS 65693-78-9)
- 1,1,1-Trifluoro-3-methylbutan-2-one (CAS 382-03-6)
- Tofacitinib Impurity 105 (CAS 2459302-85-1)
- 5-(chloromethyl)-2-isopropylthiazole (CAS 1051463-88-7)
- 6-Chloro-2,3-dihydrophthalazine-1,4-dione (CAS 3682-29-9)
- (4-Methoxyphenyl)(pyridin-2-yl)methanol (CAS 27805-39-6)
- 6-Bromo-3-(2-chloro-5-(trifluoromethyl)pyrimidin-4-yl)-1-(phenylsulfonyl)-1H-indole (CAS 2173193-44-5)
- Flomoxef Impurity 21 (CAS CATO-C4X-138221)
- C-Type Natriuretic Peptide (32-53) (human, porcine, rat) (CAS 127869-51-6)
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