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MHT CET202527 Apr 2025Evening ShiftChemistryGeneral Organic ChemistryActual

Select from the following a correct IUPAC name of pyrogallol.

Options

  1. ABenzene-1,3-diol
  2. BBenzene-1,4-diol
  3. CBenzene-1,2,3-triol
  4. DBenzene-1,3,5-triol

Correct answer

A. Benzene-1,3-diol

Step-by-step solution

Pyrogallol is the common name for 1,2,3-trihydroxybenzene. In IUPAC nomenclature, the parent structure is benzene, with hydroxyl groups located at positions 1, 2, and 3. Evaluating the options: A corresponds to resorcinol, B to hydroquinone, C correctly identifies pyrogallol as benzene-1,2,3-triol, and D corresponds to phloroglucinol.

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