2,3-Bis(4-fluorophenyl)quinoxaline-6-carboxylic acid CAS 355397-64-7
| CAS No. | 355397-64-7 |
| Molecular Formula | C21H12F2N2O2 |
| Molecular Weight | 362.33 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-Bis(4-fluorophenyl)quinoxaline-6-carboxylic acid (CAS 355397-64-7) is a high-purity analytical reference standard with the molecular formula C21H12F2N2O2 and a molecular weight of 362.33 g/mol.
Structurally, 2,3-Bis(4-fluorophenyl)quinoxaline-6-carboxylic acid (C21H12F2N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 362.33 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 2,3-Bis(4-fluorophenyl)quinoxaline-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 | C21H12F2N2O2 |
| Molecular Weight | 362.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Bis Standards
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- 4-(3-(2-Fluorophenyl)-3-methyl-2,5-dioxopyrrolidin-1-yl)benzenesulfonamide (CAS 65116-65-6)
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Recommended Standards
- 2-(Acetylamino)-2-deoxy-D-glucose 1-Oxime 3,4,6-Triacetate (CAS 908353-02-6)
- 3-4-6-Tri-O-acetyl-α-D-galactopyranose 1-2-(methyl orthoacetate) (CAS 50801-29-1)
- (S)-5,7-Dihydroxy-2-(3-hydroxy-4,5-dimethoxyphenyl)-6-methoxychroman-4-one (CAS 310888-07-4)
- 3-4-6-Tri-O-acetyl-α-D-glucopyranose 1-2-(methyl orthoacetate) (CAS 3254-16-8)
- spiro[2.5]octane-1-carboxylic acid (CAS 17202-86-7)
- Methyl 3-carbamimidoylbenzoate (CAS 15676-11-6)
- 2,3-DIbromo-3-chloro-1,1,1-trifluoropropane (CAS 1309602-11-6)
- 1-Cyclopropylpiperidine-3-carboxylic acid (CAS 939757-41-2)
- 3-(3-Chloro-4-ethoxyphenyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine (CAS 1708178-83-9)
- 3-(1,1-Dioxido-2H-1,2,4-benzothiadiazin-3-yl)-4-hydroxy-2(1H)-quinolinone 303776-73-0 (CAS 303776-73-0)
- 231291-19-3 2-bromo-3,4,4,4-tetrafluoro-3-(trifluoromethoxy)but-1-ene DTXSID60371329 (CAS 231291-19-3)
- ethyl 2-amino-4-(tert-butyl)thiazole-5-carboxylate (CAS 78968-26-0)
- Oxandrolone (CAS 53-39-4)
- Semaglutide impurity 259 (CAS CATO-C4X-2226259)
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