4-amino-2-methoxy-5-(methylthio)benzoic acid

Methyl 4-(acetylamino)-5-(ethylsulfonyl)-2-methoxybenzoate

Pharmaceutical intermediate for amisulpride impurities

4-amino-2-methoxy-5-(methylsulfonyl)benzoic acid

Amisulpride impurity

4-Amino-N-((1-ethylpyrrolidin-2-yl)methyl)-5-(methanesulfonyl)-2-methoxybenzene-1-carboximidic acid

Amisulpride impurity reference standard

4-Amino-N-[(1-ethyl-1-oxido-2-pyrrolidinyl)methyl]-5-(ethylsulfonyl)-2-methoxybenzamide

Pharmaceutical Intermediate

4-Amino-5-(ethylsulphonyl)-o-anisic acid, anhydride with ethyl hydrogen carbonate

impurity reference standard for amisulpride