Naphthol AS D Esterase

**Definition:** 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).

**Tree numbers:** - D08.811.277.352.100.550

**Synonyms:** - Naphthol AS D Chloroacetate Esterase - Naphthol AS D Acetatesterase - ANAE - alpha Naphthylesterase - alpha-Naphthyl Acetate Esterase - alpha-Naphthylacetate Esterase