Description

Meso-2,3-Dichlorobutane CAS NO 4028-56-2 is a versatile chlorinated hydrocarbon compound characterized by its specific stereochemistry. This chemical serves as a valuable intermediate and building block in advanced organic synthesis, offering unique reactivity for constructing complex molecular architectures. It is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the synthesis of active pharmaceutical ingredients (APIs) and fine chemicals.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents.
• Organic Synthesis Building Block: Employed in cross-coupling reactions, nucleophilic substitutions, and as a precursor for other functionalized butanes.
• Polymer & Material Science: Acts as a monomer or modifier in the development of specialty polymers and resins.
• Chemical Research & Development: A valuable reagent for method development and exploring new synthetic pathways in academic and industrial R&D labs.
• Ligand & Catalyst Preparation: Used in the synthesis of chiral ligands and organometallic catalysts for asymmetric synthesis.

Basic Information

Product Name	Meso-2,3-Dichlorobutane
CAS No.	4028-56-2
Molecular Formula	C4H8Cl2
Molecular Weight	127.01 g/mol
Synonyms	meso-2,3-Dichlorobutane; (2R,3S)-2,3-Dichlorobutane; (2S,3R)-2,3-Dichlorobutane; 2,3-Dichlorobutane (meso-form); DL-2,3-Dichlorobutane (meso); Butane, 2,3-dichloro-, meso-; (±)-2,3-Dichlorobutane (inactive meso isomer)
EINECS	223-708-9

Quality Control

Our Meso-2,3-Dichlorobutane is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including GC, NMR, and chiral purity analysis, to ensure it meets the high standards required for synthetic applications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile nature, keep containers tightly sealed when not in use. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Chiral Purity (Chiral GC/HPLC)	≥ 99.0% meso isomer
Water Content (KF)	≤ 0.1%
Density (at 20°C)	1.10 - 1.15 g/mL
Boiling Point	~ 120 - 125 °C

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