Description

(2R,3R)-(+)-2,3-Butanediol Di-p-Tosylate, 99 is a high-purity chiral building block and protecting group reagent, essential for asymmetric synthesis. Its defined stereochemistry and high chemical purity make it a critical intermediate for constructing complex molecules with precise three-dimensional architecture. This compound is primarily needed by research institutions and pharmaceutical manufacturers engaged in the development of active pharmaceutical ingredients (APIs), fine chemicals, and advanced materials.

Application

• Chiral Auxiliary in Asymmetric Synthesis: Used to introduce and control stereocenters in the synthesis of complex organic molecules.
• Pharmaceutical Intermediate: Serves as a key precursor in the multi-step synthesis of enantiomerically pure drugs and bioactive compounds.
• Protecting Group Reagent: The tosylate groups effectively protect diol functionalities during multi-step synthetic sequences.
• Ligand and Catalyst Preparation: Employed in the synthesis of chiral ligands for asymmetric catalysis and metal-organic frameworks.
• Fine Chemical and Specialty Chemical Production: Integral to manufacturing high-value, optically active fine chemicals for agrochemicals and electronics.
• Academic and Industrial R&D: A valuable tool for methodological development and exploratory research in synthetic organic chemistry.

Basic Information

Item	Details
Product Name	(2R,3R)-(+)-2,3-Butanediol Di-p-Tosylate, 99
CAS No.	64896-27-1
Molecular Formula	C20H26O6S2
Molecular Weight	426.55 g/mol
Synonyms	(2R,3R)-2,3-Dihydroxybutane-1,4-diyl bis(4-methylbenzenesulfonate); (2R,3R)-(+)-2,3-Butanediol Ditosylate; (2R,3R)-Butane-2,3-diyl bis(4-methylbenzenesulfonate); D-(-)-2,3-Butanediol Di-p-toluenesulfonate; (R,R)-(+)-2,3-Butanediol Di-p-Tosylate; (2R,3R)-2,3-Bis[(4-methylphenyl)sulfonyloxy]butane; (R,R)-2,3-Butanediol Ditosylate
EINECS	Contact for details

Quality Control

Our (2R,3R)-(+)-2,3-Butanediol Di-p-Tosylate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including chiral HPLC and NMR, to ensure a minimum purity of 99% and confirm stereochemical integrity. Certificates of Analysis (COA) with detailed chromatographic and spectroscopic data are provided to guarantee traceability and batch-to-batch consistency for your critical research and production needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed in a dry environment to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
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.