(R)-2,2'-Dimethyl-1,1'-binaphthalene CAS 19634-89-0
| CAS No. | 19634-89-0 |
| Molecular Formula | C22H18 |
| Molecular Weight | 282.38 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.
(R)-2,2'-Dimethyl-1,1'-binaphthalene (CAS 19634-89-0) is a high-purity analytical reference standard with the molecular formula C22H18 and a molecular weight of 282.38 g/mol.
Based on its molecular formula C22H18, (R)-2,2'-Dimethyl-1,1'-binaphthalene contains a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 282.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C22H18 |
| Molecular Weight | 282.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related R Standards
- 2-(3,5-Dimethyl-phenylamino)-N-phenyl-butyramide (CAS 1008623-10-6)
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- 1,3-Dimethyl-4-(4-methylbenzenesulfonyl)-2,3-dihydro-1H-imidazole-2-thione (CAS 282109-03-9)
- 2,2'-Dimethyl-1,1'-binaphthalene (CAS 32834-84-7)
- 2,2'-Dimethyl-1,1'-binaphthalene (CAS 60536-98-3)
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Recommended Standards
- 1-(3-Isopropyl-1-phenyl-5-vinyl-1H-pyrazol-4-yl)-2-methylpropan-1-one (CAS 1956380-26-9)
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- Carbamic acid, N-[3-oxo-3-(1-pyrrolidinyl)propyl]-N-2-propen-1-yl-, 1,1-dimethylethyl ester (CAS 1956324-07-4)
- (2-benzyloxy-4-formyl-phenyl) acetate (CAS 28610-42-6)
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- 1,3,5-Tris(5,5-dimethyl-1,3,2-dioxaborinan-2-yl)benzene (CAS 916330-18-2)
- Chlorambucil EP Impurity C (CAS CATO-C4X-35541)
- Ethyl 8-amino-4-oxo-4h-chromene-2-carboxylate (CAS 103195-35-3)
- (E)-N-(3-chloro-4-fluorophenyl)-3-(3,4,5-trimethoxyphenyl)acrylamide (CAS 329778-43-0)
- 2-Fluoro-4-(trifluoromethoxy)benzonitrile (CAS 1240256-78-3)
- 1-(4-Bromobenzyl)-4-(chloromethyl)-1H-1,2,3-triazole (CAS 1251049-88-3)
- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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