Naphthol AS D Esterase. alpha Naphthylesterase . alpha-Naphthylacetate Esterase . Acetate Esterase, alpha-Naphthyl . Esterase, alpha-Naphthyl Acetate . Esterase, alpha-Naphthylacetate . Naphthylesterase, alpha . alpha Naphthyl Acetate Esterase . alpha Naphthylacetate Esterase . alpha-Naphthyl Acetate Esterase . ANAE 7127 . Naphthol AS D Acetatesterase . Naphthol AS D Chloroacetate Esterase . Hydrolytic enzyme activity used as a histocytochemical test for the presence of esterases in tissue. Substrate used is 3-hydroxy-4'-nitro-2-naphthanilide chloroacetate (naphthol AS-D). . 0.78