3,3'-(Pyrazine-2,6-diyl)dibenzoic acid CAS 623157-24-4
| CAS No. | 623157-24-4 |
| Molecular Formula | C18H12N2O4 |
| Molecular Weight | 320.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,3'-(Pyrazine-2,6-diyl)dibenzoic acid (C18H12N2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
3,3'-(Pyrazine-2,6-diyl)dibenzoic acid (CAS 623157-24-4) is a high-purity analytical reference standard with the molecular formula C18H12N2O4 and a molecular weight of 320.30 g/mol.
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), 3,3'-(Pyrazine-2,6-diyl)dibenzoic 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 | C18H12N2O4 |
| Molecular Weight | 320.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 2 |
Related Pyrazine Standards
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- 2-(Pyrazine-2-carboxamido)-N-(pyridin-4-ylmethyl)oxazole-4-carboxamide (CAS 1396852-51-9)
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- 2-(2-(Pyrazine-2-carboxamido)thiazol-4-yl)acetic acid (CAS 926204-94-6)
- 4,4'-(Pyrazine-2,5-diyl)dianiline (CAS 59447-32-4)
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Recommended Standards
- 3-(D-Glucopentitol-1-yl)-1,2,4-triazolo[3,4-α]phthalazine (CAS 79364-50-4)
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- 2,7-Dihydroxynaphthalene-3,6-disulphonate (CAS 23894-07-7)
- 4,4''-Dinitro-p-terphenyl (CAS 3282-11-9)
- 4-(3-Bromobenzamido)benzoic acid (CAS 413574-80-8)
- 3,6-Dibromo-2-fluorophenylacetic acid (CAS 1803785-23-0)
- Norkurarinone (CAS 34981-24-3)
- 2-Methyl-N-(1-(pyridin-2-yl)ethyl)aniline (CAS 7137-98-6)
- Bucladesine Impurity 8 (CAS CATO-C4X-20268)
- Bis(3,5-dimethylphenyl) (4-ethylphenyl) phosphate (CAS 7144-07-2)
- Methyl 1-(2-(o-tolyloxy)acetyl)-1H-indole-3-carboxylate (CAS 424810-09-3)
- 2-(4,5-Dichloro-1H-imidazol-1-yl)pyridin-3-amine (CAS 1279219-55-4)
- 5-Bromo-3-ethylthiophene-2-carboxylic acid (CAS 193064-97-0)
- Insulin Degludec Impurity 2 (CAS CATO-C4X-21572)
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