3-amino-2-hydroxybenzoic acid|3-amino-2-hydroxybenzoic acid (3-aminosalicylic acid).;|3-amino-2-hydroxybenzoic acid (3-aminosalicylic acid).; Mesalamine EP Impurity F|3-Amino-2-hydroxybenzoic acid;|3-Amino-2-hydroxybenzoic-4,5,6-d3 acid