2,3-Di(pyridin-2-yl)quinoxaline CAS 23309-74-2
| CAS No. | 23309-74-2 |
| Molecular Formula | C18H12N4 |
| Molecular Weight | 284.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2,3-Di(pyridin-2-yl)quinoxaline 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.
2,3-Di(pyridin-2-yl)quinoxaline (CAS 23309-74-2) is a high-purity analytical reference standard with the molecular formula C18H12N4 and a molecular weight of 284.31 g/mol.
Based on its molecular formula C18H12N4, 2,3-Di(pyridin-2-yl)quinoxaline contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 284.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C18H12N4 |
| Molecular Weight | 284.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 4 |
Related Di Standards
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- 3-[(pyridin-3-yl)sulfamoyl]thiophene-2-carboxylic acid (CAS 944894-10-4)
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- N-(2-(Pyridin-4-yl)ethyl)benzo[c][1,2,5]thiadiazole-5-carboxamide (CAS 1202989-17-0)
- N-(Pyridin-3-ylmethyl)-5-(thiophen-2-yl)-1H-pyrazole-3-carboxamide (CAS 1240059-12-4)
- 1,4-Bis(2-(pyridin-4-yl)vinyl)benzene (CAS 3095-81-6)
Recommended Standards
- 2,3,5,6,8,9,11,12-Octahydrobenzo[b][1,4,7,10,13]pentaoxacyclopentadecin-15-ol (CAS 76427-67-3)
- 2,4- Dimethoxy -2'- hydroxychalcone (CAS 36685-63-9)
- 2,2'-Oxybis(N-phenylacetamide) (CAS 83936-42-9)
- 2-[(Phenylsulfonyl)amino]-1,3-thiazole-4-carboxylic acid (CAS 860182-04-3)
- 4-[(tributylstannyl)methoxy]-1-butanamine (CAS 1577233-75-0)
- 2-Hydroxy-N,N,N-trimethylethanaminium methyl sulfate (CAS 65151-62-4)
- RuBi-NicotineDISCONTINUED (CAS 1256362-30-7)
- 3,3',5,5'-Tetramethylbenzidine (CAS 54827-17-7)
- 3-(1H-Benzo[d]imidazol-2-yl)propan-1-ol (CAS 2403-66-9)
- N-(2-methoxy-5-nitrophenyl)piperidin-4-amine (CAS 1183235-08-6)
- 5-Methyl-2-(pyrrolidin-1-yl)pyridine (CAS 325460-82-0)
- 2-(Bromomethyl)-4-chloro-5-(difluoromethyl)-3-(trifluoromethyl)pyridine (CAS 1806944-88-6)
- methyl 2-formylthiazole-4-carboxylate (CAS 921927-88-0)
- Semaglutide impurity 271 (CAS CATO-C4X-2226271)
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