Description

Dl-2-Methylbutyryl Chloride CAS NO 5856-79-1 is a versatile organic acid chloride derivative of 2-methylbutyric acid, serving as a critical acylating and building block agent in advanced chemical synthesis. Its high reactivity enables efficient introduction of the 2-methylbutyryl moiety, which is valuable for modifying the physical and biological properties of target molecules. This compound is essential for research and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly in the development of prodrugs and molecules with tailored pharmacokinetic profiles.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides, where the 2-methylbutyryl group can enhance biological activity and stability.
• Perfumery and Flavoring Agents: Acts as a precursor for esters used in the creation of fruity and creamy flavor notes and fragrances.
• Polymer Chemistry: Employed as a modifying agent or monomer in the synthesis of specialized polymers and resins to alter surface properties or introduce specific functional groups.
• Organic Synthesis Reagent: A fundamental acylating agent in laboratories and pilot plants for amide, ester, and ketone formation under mild conditions.
• Chemical Research: Utilized in academic and industrial R&D for exploring new synthetic pathways and creating novel chemical entities for screening.

Basic Information

Product Name	Dl-2-Methylbutyryl Chloride
CAS No.	5856-79-1
Molecular Formula	C5H9ClO
Molecular Weight	120.58 g/mol
Synonyms	2-Methylbutanoyl Chloride; 2-Methylbutyryl Chloride; DL-2-Methylbutyroyl Chloride; (±)-2-Methylbutyryl Chloride; 2-Methylbutanoic Acid Chloride; α-Methylbutyryl Chloride; Butanoyl chloride, 2-methyl-; NSC 9375
EINECS	227-476-2

Quality Control

Our Dl-2-Methylbutyryl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each 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 such as strong bases, alcohols, and amines. Due to its nature as a strong acid/organic solvent, it is recommended to handle and store under an inert atmosphere (e.g., nitrogen) for extended periods to maintain optimal purity. Typical recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Acidity (as HCl)	≤ 1.0%

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