Description

(S)-(+)-1,1'-Bi-2-Naphthyl Ditosylate CAS NO 128544-06-9 is a high-purity, enantiomerically pure chiral auxiliary and ligand precursor essential for asymmetric synthesis. Its value lies in its ability to induce high stereoselectivity in critical bond-forming reactions, enabling the production of single-enantiomer compounds. This product is primarily needed by research institutions and pharmaceutical companies engaged in the development of chiral active pharmaceutical ingredients (APIs), agrochemicals, and advanced materials.

Application

• As a chiral ligand precursor for transition metal catalysts in asymmetric hydrogenation and carbon-carbon bond formation.
• As a key chiral auxiliary in the synthesis of enantiomerically pure pharmaceutical intermediates.
• For use in the research and development of novel asymmetric catalytic systems.
• In the preparation of chiral stationary phases for analytical chromatography.
• As a building block for sophisticated chiral molecular scaffolds in material science.
• For the synthesis of chiral phosphine ligands used in homogeneous catalysis.

Basic Information

Product Name	(S)-(+)-1,1'-Bi-2-Naphthyl Ditosylate
CAS No.	128544-06-9
Molecular Formula	C34H26O6S2
Molecular Weight	594.69 g/mol
Synonyms	(S)-(+)-1,1'-Bi(2-naphthyl) Ditosylate; (S)-BINOL Ditosylate; (S)-1,1'-Bi-2-naphthol Ditosylate; (S)-2,2'-Bis(p-toluenesulfonyloxy)-1,1'-binaphthyl; (S)-BINOL Bis(tosylate); (S)-BINOL ditosylate ester; (S)-2,2'-Ditosyloxy-1,1'-binaphthyl; (S)-DTB
EINECS	Contact for details

Quality Control

Our (S)-(+)-1,1'-Bi-2-Naphthyl Ditosylate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for advanced synthetic applications. Certificates of Analysis (COA) with detailed chromatographic data are provided to guarantee reproducible performance and lot-to-lot consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents and bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
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.