(S)-[1,1’-Binaphthalene]-2,2’-dicarboxylic Acid CAS 18531-96-9
| CAS No. | 18531-96-9 |
| Molecular Formula | C22H14O4 |
| Molecular Weight | 342.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(S)-[1,1’-Binaphthalene]-2,2’-dicarboxylic Acid (CAS 18531-96-9) is a high-purity analytical reference standard with the molecular formula C22H14O4 and a molecular weight of 342.34 g/mol.
Structurally, (S)-[1,1’-Binaphthalene]-2,2’-dicarboxylic Acid (C22H14O4) contains a flavonoid core, a hydroxyl group, an ether linkage. 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 342.34 g/mol, it falls into the moderately-high-molecular-weight range. 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C22H14O4 |
| Molecular Weight | 342.34 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related S Standards
- [1,1'-Binaphthalene]-4,4'-dicarboxylic acid (CAS 123524-53-8)
- [1,1′-Binaphthalene]-8,8′-dicarboxylic acid (CAS 29878-91-9)
- (R)-[1,1'-Binaphthalene]-2,2'-dicarboxamide (CAS 406464-00-4)
- [1,1′-Binaphthalene]-3,3′-dicarbonitrile,2,2′-dihydroxy-, (1S)- (CAS 656805-31-1)
- (S)-(1,1'-Binaphthalene-2,2'-dioxy)chlorophosphine (CAS 137156-22-0)
- [1,1'-Binaphthalene]-2,2',7,7'-tetraol (CAS 66478-68-0)
- [1,1'-Binaphthalene]-2,2'-diyldimethanol (CAS 3594-94-3)
- [2,2'-Binaphthalene]-1,1',4,4'-tetraone (CAS 3408-13-7)
Recommended Standards
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- 1-(4-hydroxy-2,5-dimethoxyphenyl)ethan-1-one (CAS 13909-71-2)
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