[CH3:1][C:2]1[CH:3]=[CH:4][N:5]=[C:6]([NH:8][S:9]([C:12]2[CH:13]=[CH:14][C:15]([NH2:18])=[CH:16][CH:17]=2)(=[O:11])=[O:10])[N:7]=1.[OH-].[Na+].[N+]([O-])([O-])=O.[Ag+:25]>O.[N+]([O-])(O)=O>[Ag:25].[CH3:1][C:2]1[CH:3]=[CH:4][N:5]=[C:6]([NH:8][S:9]([C:12]2[CH:17]=[CH:16][C:15]([NH2:18])=[CH:14][CH:13]=2)(=[O:11])=[O:10])[N:7]=1Silver Sulfamerazine was prepared using 26.43 g sulfamerazine, 300 ml of water, 4.00 grams of NaOH warming to 70 degree C. until dissolved. 16.99 grams of silver nitrate in 300 grams of water with 1 drop of 10% nitric acid and warming to 70 degree C. The sulfamerazine solution was added to the silver nitrate solution with stirring. Silver sulfamerazine precipitated as a fine white powder. This was filtered and washed three times with water and dried overnight at 60 deg to give an off-white powder.
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