Description

(S)-(-)-Dimethyl-2 2'-Dihydroxy-1 1'-Binaphthyl is a chiral, non-racemic binaphthyl derivative characterized by its axial chirality and two phenolic hydroxyl groups. This compound matters as a versatile and highly valuable chiral ligand and building block in asymmetric synthesis, enabling the production of enantiomerically pure pharmaceuticals and fine chemicals. It is primarily needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors for applications in catalysis and molecular recognition.

Application

• As a chiral ligand in asymmetric metal-catalyzed reactions, including hydrogenation, oxidation, and C-C bond formation.
• As a key precursor for synthesizing more complex chiral phosphine and phosphite ligands (e.g., BINAP derivatives).
• In the development and production of enantiomerically pure active pharmaceutical ingredients (APIs).
• As a chiral resolving agent or selector in chromatography for the separation of enantiomers.
• For academic and industrial R&D in stereoselective synthesis and catalysis.
• In the synthesis of functional materials, such as chiral polymers and liquid crystals.

Basic Information

Product Name	(S)-(-)-Dimethyl-2 2'-Dihydroxy-1 1'-Binaphthyl
CAS No.	69678-00-8
Molecular Formula	C22H16O2
Molecular Weight	312.36 g/mol
Synonyms	(S)-(-)-1,1'-Bi-2-naphthol dimethyl ether; (S)-(-)-2,2'-Dimethoxy-1,1'-binaphthyl; (S)-(-)-DM-BINOL; (S)-(-)-2,2'-Dimethoxy-[1,1'-binaphthalene]; (S)-(-)-Dimethyl BINOL; (S)-BINOL dimethyl ether; (S)-(-)-1,1'-Binaphthalene-2,2'-diyl dimethyl ether; (S)-(-)-2,2'-Dimethoxy-1,1'-binaphthyl
EINECS	Contact for details

Quality Control

Our (S)-(-)-Dimethyl-2 2'-Dihydroxy-1 1'-Binaphthyl is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure compliance with exacting research and process chemistry standards. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and enantiomeric excess is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at room temperature (15-25°C) under an inert atmosphere (e.g., nitrogen or argon) due to its sensitivity to oxidation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Enantiomeric Excess (ee)	≥ 99.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%

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