A new sensitive and specific test for the detection of aldehydes: formation of 6-mercapto-3-substituted-s-triazolo[4,3-b]-s-tetrazines

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Abstract
The ready reaction of 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole with aldehydes to form coloured derivatives of s-triazolo[4,3-b]-s-tetrazine is described.