1,1'-Dihydroxy-3,3'-dimethyl-[2,2'-binaphthalene]-5,5',8,8'-tetraone CAS 89475-31-0
| CAS No. | 89475-31-0 |
| Molecular Formula | C22H14O6 |
| Molecular Weight | 374.34 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.
1,1'-Dihydroxy-3,3'-dimethyl-[2,2'-binaphthalene]-5,5',8,8'-tetraone (CAS 89475-31-0), molecular formula C22H14O6 and molecular weight 374.34 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, 1,1'-Dihydroxy-3,3'-dimethyl-[2,2'-binaphthalene]-5,5',8,8'-tetraone is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 374.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C22H14O6 |
| Molecular Weight | 374.34 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1982 |
Related Dihydroxy Standards
- 2,2'-Dihydroxy-[1,1'-binaphthalene]-4,4'-dicarboxylic acid (CAS 1206478-00-3)
- 3,5-dihydroxy-3,4,5,7-tetramethoxyflavone (CAS 14290-57-4)
- 5,7-Dihydroxy-3-methoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one (CAS 14585-04-7)
- (R)-2,2'-Dihydroxy-[1,1'-binaphthalene]-3,3'-dicarboxylic acid (CAS 18531-92-5)
- (S)-2,2'-Dihydroxy-[1,1'-binaphthalene]-3,3'-dicarboxylic acid (CAS 42167-04-4)
- 2,2'-Dihydroxy-[1,1'-binaphthalene]-3,3'-dicarboxylic acid (CAS 47568-49-0)
- 4,4''-Dihydroxy-[1,1':4',1''-terphenyl]-3,3'',5,5''-tetracarbaldehyde (CAS 2761020-02-2)
- 4,4'-Dihydroxy-7,7'-dimethyl-[1,1'-binaphthalene]-5,5',8,8'-tetraone (CAS 33927-59-2)
Recommended Standards
- 2-(2-(3,4,5-Trimethoxybenzoyl)hydrazine-1-carbonyl)benzoic acid (CAS 356526-74-4)
- 2-[(3,4-Difluorophenyl)methyl]-4-(5-methyl-1,2,4-oxadiazol-3-yl)-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775440-91-9)
- 4,4'-(3-Oxo-1,3-dihydroisobenzofuran-1,1-diyl)dibenzoic acid (CAS 7535-16-2)
- 4,4''-Diformyl-[1,1':4',1''-terphenyl]-2',5'-dicarboxylic acid (CAS 2409130-70-5)
- 3-(5-Chloro-2-methoxyphenyl)pentan-3-ol (CAS 1343147-01-2)
- (1S,2R)-2-(2-fluorophenyl)cyclopropan-1-amine (CAS 131844-32-1)
- Desoxyrhaponticin (CAS 30197-14-9)
- 2-(tert-Butyl)-6-chloronicotinonitrile (CAS 1707371-95-6)
- 7-Chloro-3-oxo-2,3-dihydro-1H-indene-4-carboxylic acid (CAS 1092347-16-4)
- Rivastigmine EP Impurity E (CAS 923035-05-6)
- 2-((4,6,7-Trimethylquinazolin-2-yl)amino)-5,6,7,8-tetrahydroquinazolin-4(3H)-one (CAS 487035-73-4)
- 6-(difluoromethoxy)pyridin-2-amine (CAS 1131007-43-6)
- Penfluridol Impurity 13 (CAS CATO-C4X-353813)
- Palmitoyl Tripeptide-1 TFA salt (CAS 2803375-47-3)
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