Task: Text Categorization
Input (English): The most common methods for their preparation are treatment of halohydrins with aqueous base, and oxidation of alkenes with peroxycarboxylic acids. The simplest member is used as a chemical sterilant, and its reaction with Grignard reagents is a convenient way to lengthen a carbon chain by two atoms. Their high strain makes them highly reactive, and they undergo ring-opening reactions with a variety of nucleophiles. Containing an oxygen atom in a three-member ring, FTP, name these cyclic ethers.
Output (English): Science