2-Acetoxy-2-phenylacetyl chloride (CAS No.1638-63-7), its synonyms are 2-Chloro-2-oxo-1-phenylethyl acetate ; Benzeneacetyl chloride, .alpha.-(acetyloxy)- ; Benzeneacetyl chloride, alpha-(acetyloxy)- ; 1-(Chloroformyl)benzyl acetate ; O-Acetyl-Mandelic Acid Chloride