Propionyl Chloride is functional as a chemical intermediate. This is useful as an acylating agent and can convert 2-methoxynaphthalene to 1-propio-2-methoxynaphthalene as well as anisole to 4-methoxypropiophenone in the presence of Indium (III) chloride. Propionyl Chloride has effective utility in the chlorination. Offered chemical has extensive utility in assorted sectors. This organic compound has a formula CHCHCCl and is known as the acyl chloride derivative of propionic acid. Offered is a colorless, volatile and corrosive liquid, which can be utilized as the reagent in the organic synthesis.