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In what respect do prontosil and salvars...

In what respect do prontosil and salvarsan resemble. Is there any resemblance between azodye and prontosil?

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Both salvarsan and prontosil are antibacterial drugs (antimicrobials). There is a structural similarity between these two compounds. Salvarsan contains -As =Aslinkage, while prontosil contains - N = N - linkage. Both prontosil and azodyes contain the same - N =N - linkage.
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