Description

(S)-(-)-2,2'-Dimethoxy-1,1'-Binaphthalene CAS NO 75640-87-8 is a high-purity, enantiomerically pure chiral ligand and building block of significant importance in asymmetric synthesis. Its core value lies in its ability to induce chirality in catalytic reactions, enabling the production of single-enantiomer compounds with high selectivity. This product is essential for researchers and process chemists in the pharmaceutical, agrochemical, and advanced materials industries who require reliable, high-quality chiral auxiliaries for developing new active ingredients and functional molecules.

Application

• As a chiral ligand in asymmetric metal-catalyzed reactions, including hydrogenation, coupling, and cycloaddition.
• As a key building block for synthesizing more complex chiral phosphine ligands (e.g., BINAP derivatives).
• In the research and development of pharmaceutical intermediates and active pharmaceutical ingredients (APIs) requiring specific stereochemistry.
• For the synthesis of chiral catalysts used in fine chemical and agrochemical manufacturing.
• In material science for creating chiral polymers or frameworks with unique optical properties.
• As a resolution agent or chiral selector in analytical chemistry applications.

Basic Information

Product Name	(S)-(-)-2,2'-Dimethoxy-1,1'-Binaphthalene
CAS No.	75640-87-8
Molecular Formula	C22H18O2
Molecular Weight	314.38 g/mol
Synonyms	(S)-(-)-2,2'-Dimethoxy-1,1'-binaphthyl; (S)-2,2'-Dimethoxy-1,1'-binaphthalene; (S)-(-)-DM-BINOL; (S)-(-)-1,1'-Bi-2-naphthol dimethyl ether; (S)-(-)-6,6'-Dimethoxy-2,2'-dihydroxy-1,1'-binaphthyl; (S)-(-)-Dimethyl 1,1'-binaphthyl-2,2'-diyl ether; (S)-BINOL dimethyl ether
EINECS	Contact for details

Quality Control

Our (S)-(-)-2,2'-Dimethoxy-1,1'-Binaphthalene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral HPLC and NMR, to ensure high enantiomeric excess (ee) and chemical purity consistent with research and process development requirements. Certificates of Analysis (COA) detailing identity, purity, and chiral purity are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at room temperature (15-25°C). The compound is light-sensitive and should be handled under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0% ee
Melting Point	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.