Description

Methylmalonylchloride CAS NO 20656-61-5 is a versatile and highly reactive acid chloride derivative of methylmalonic acid. This compound serves as a critical building block in organic synthesis, enabling the efficient introduction of the methylmalonyl moiety. It is essential for research and production chemists in the pharmaceutical, agrochemical, and fine chemical industries, particularly for the synthesis of complex molecules, active pharmaceutical ingredients (APIs), and specialty intermediates.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various active pharmaceutical ingredients (APIs) and prodrugs.
• Agrochemical Synthesis: Used in the manufacture of herbicides, fungicides, and other crop protection agents.
• Peptide & Protein Modification: Employed as a coupling agent or for introducing specific functional groups into biomolecules.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for producing specialty polymers and resins.
• Fine Chemical Production: Integral for creating complex esters, amides, and other derivatives in custom synthesis.
• Material Science Research: Utilized in developing novel organic materials and coatings.
• Chemical Biology Probes: Facilitates the creation of labeled compounds and molecular probes for research.

Basic Information

Product Name	Methylmalonylchloride
CAS No.	20656-61-5
Molecular Formula	C4H5ClO2
Molecular Weight	120.53 g/mol
Synonyms	Methylmalonyl Chloride; Methylmalonic Acid Dichloride; 2-Methylmalonyl Dichloride; Propanedioyl chloride, 2-methyl-; Methylpropanedioyl Dichloride; Methylmalonic Dichloride; NSC 163082; α-Methylmalonyl Chloride
EINECS	Contact for details

Quality Control

Our Methylmalonylchloride is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay, purity profiling, and identification, to ensure it meets exacting standards for research and industrial use. Certificates of Analysis (COA) documenting purity, physical properties, and impurity profiles are available for every shipment upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, alcohols, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Impurities (HPLC)	≤ 2.0% total

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