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How does maltose form its osazone crystal? If osazone is to be formed, then there must be aldehyde form for phenylhydrazine to react, but maltose is formed after hemiacetal formation. How do we address this?enter image description here

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    $\begingroup$ What happens if you tautomerize the hydroxyl proton on the far right to the nearby ring oxygen? $\endgroup$ – Oscar Lanzi Oct 27 at 9:05
  • $\begingroup$ Then you have to break the ring. $\endgroup$ – Nandi A Oct 27 at 9:35
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    $\begingroup$ And you then get what? Sugars easily do this tautomerization. $\endgroup$ – Oscar Lanzi Oct 27 at 9:38

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