Sulpiride impurity B - methyl 2-methoxy-5-sulphamoylbenzoate

Suxamethonium chloride

Sulpiride

Sulpiride impurity A - [(2RS)-1-ethylpyrrolidin-2-yl]methanamine

Sulfapyridine

Sulindac

Sulfinpyrazone impurity A - 1,2-diphenyl-4-(2-phenylsulphonylethyl)pyrazolidine-3,5-dione

Sulfinpyrazone impurity B - 1,2-diphenyl-4-(2-phenylthioethyl)pyrazolidine-3,5-dione

Sulfathiazole

Sulfinpyrazone