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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3el229

Select all correct statements about the drug shown.

  1. AIt liberates carbon dioxide from aqueous sodium hydrogencarbonate
  2. BIts degree of unsaturation is 5
  3. CIt contains a phenolic OH group
  4. DIt has exactly one stereocentre

Answer: A, B, D

The compound shown is ibuprofen, C13H18O2. The CH(CH3) carbon next to COOH is the only stereocentre. The COOH group is acidic enough to release CO2 from NaHCO3. DoU = (2x13 + 2 - 18)/2 = 5 (ring 4 + C=O 1). There is no phenolic OH, so that statement is false.
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