Methacryloyl Chloride

• CAT Number: R040354
• CAS Number: 920-46-7
• Molecular Formula: C4H5ClO
• Molecular Weight: 104.53
• Purity: ≥95%
• Synonyms: 2-Methyl-2-propenoyl Chloride; 2-Methylacryloyl Chloride; 2-Methylpropenoic Acid Chloride; Methacrylic Acid Chloride; Methacrylic Chloride; Methacrylyl Chloride; α-Methylacryloyl Chloride
• Storage: Store at +4C
• IUPAC Name: 2-methylprop-2-enoyl chloride
• InChI: InChI=1S/C4H5ClO/c1-3(2)4(5)6/h1H2,2H3
• InChIKey: VHRYZQNGTZXDNX-UHFFFAOYSA-N
• SMILES: CC(=C)C(=O)Cl

Methacryloyl chloride（Cat No.:R040354）is a reactive organic compound featuring a methacrylate group bonded to an acyl chloride functional group. It appears as a colorless to yellowish liquid with a pungent odor and is highly moisture-sensitive. This compound is widely used as an intermediate in the synthesis of methacrylate-based polymers, resins, and specialty chemicals. Due to its reactive acyl chloride group, it readily forms esters and amides with alcohols and amines, respectively. Methacryloyl chloride is important in materials science, coatings, adhesives, and biomedical applications, particularly in modifying surfaces and developing functionalized polymers.