Tolvaptan Impurity 15

2-Methyl-4-nitrobenzoyl chloride 5-Dehydro Tolvaptan Tolvaptan Impurity 4 (DM-4105) Ethyl 7-Chloro-5-oxo-1-toxyl-2,3,4,5,-tetrahydro-1H-benzo[b]azepine-4-carboxylate Tolvaptan Impurity 18

Tolvaptan Impurity 13 5-Chloro-2-[(4-ethoxy-4-oxobutyl)[(4-methylphenyl)sulfonyl]amino]benzoic acid methyl ester Tolvaptan Impurity 21 Tolvaptan Impurity 3 (DM-4104) Tolvaptan Impurity 30

7-Chloro-1,2,3,4-tetrahydro-1-[(4-methylphenyl)sulfonyl]-5H-1-benzazepin-5-one 7-Chloro-1,2,3,4-tetrahydro-1-(2-methyl-4-nitrobenzoyl)-5H-1-benzazepin-5-one Tolvaptan Impurity 17 Tolvaptan impurity 2 Tolvaptan Impurity 20

Tolvaptan Impurity 11 Tolvaptan Impurity 26 1-(4-Amino-2-methylbenzoyl)-7-chloro-1,2,3,4-tetrahydro-5H-1-benzazepin-5-one