(−)-2,3-Butanediyl di(p-toluenesulfonate)

CAS 74839-83-1[CH3C6H4SO3CH(CH3)-]2Chemical Synthesis

(−)-2,3-Butanediyl di(p-toluenesulfonate), CAS 74839-83-1, with a molecular weight of 398.49 g/mol, is a chiral organic compound. It serves as a valuable building block in asymmetric synthesis and general chemical synthesis. Its structure, derived from (–)-2,3-butanediol, makes it particularly useful for introducing chirality into target molecules, finding applications in the development of complex organic compounds and pharmaceutical intermediates.

IUPAC: (−)-2,3-Butanediol di-p-tosylate
Synonyms: (−)-2,3-Butanediol di-p-tosylate

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(−)-2,3-Butanediyl di(p-toluenesulfonate) ([CH3C6H4SO3CH(CH3)-]2) — chemical structure, CAS 74839-83-1; Chemistry, fine chemical supplied by Tech Serve Solutions

Asymmetric SynthesisChemical SynthesisChiral Building BlocksOrganic Building BlocksProtected Alcohols

01 /Applications

Chiral Building Block

This compound is a key chiral intermediate, enabling the stereoselective synthesis of complex molecules. Its well-defined stereochemistry is crucial for applications in asymmetric synthesis where precise control of chirality is required.

Organic Synthesis Reagent

Used in various organic transformations, its tosylate groups act as excellent leaving groups. This facilitates nucleophilic substitution reactions, making it a versatile reagent for constructing carbon-carbon and carbon-heteroatom bonds.

Precursor for Protected Alcohols

It can be utilized as a precursor in synthetic routes where protected diol functionalities are needed. The tosylate groups can be selectively manipulated or removed under specific reaction conditions.

02 /Properties

Molecular weight	398.49
Linear formula	[CH3C6H4SO3CH(CH3)-]2
Assay	99%
Optical activity	[α]20/D −38°, c = 2 in chloroform
Melting point	67-69 °C(lit.)

03 /Safety & handling

Protective equipment	Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
Water hazard class (WGK, DE)	3

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

74839-83-1

MDL number

MFCD00010332

PubChem substance

24858802

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is (–)-2,3-Butanediyl di(p-toluenesulfonate) used for?

(–)-2,3-Butanediyl di(p-toluenesulfonate) is used as a chiral building block in asymmetric synthesis and general organic chemical synthesis, particularly as a precursor for protected alcohols.

What is the CAS number and formula for (–)-2,3-Butanediyl di(p-toluenesulfonate)?

The CAS number is 74839-83-1 and the linear formula is [CH3C6H4SO3CH(CH3)-]2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies (–)-2,3-Butanediyl di(p-toluenesulfonate) at 99% purity. TSS does not represent this product as USP, BP, EP, or any pharmacopoeia grade.

What are the safety and handling recommendations for this chemical?

Handling requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. This compound is classified under WGK 2 in Germany, indicating a hazard to water.

How is this product packed, shipped, and exported?

Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, ensuring appropriate packaging and adherence to international shipping regulations for all products.