Lisinopril EP Impurity B

4-Methylbenzenesulfonic acid (as per EP); Sultamicillin Impurity B (EP/BP); p-toluenesulfonic acid; 4-Methylbenzenesulphonic Acid; Monohydrate 4-Methylbenzenesulfonic Acid; 4-Toluenesulfonic Acid; Toluene-4-sulfonic Acid;  p-Methylphenylsulfonic Acid; Benzenesulfonic Acid, 4-methyl; p-Toluenesulfonic acid; 4-Methylbenzenesulfonic Acid