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JEE Main levelSingle correct optionDifficulty 2 of 3el256

How many phenolic OH groups and which other oxygen-containing group does the antioxidant shown contain?

  1. AThree alcoholic OH and one ester
  2. BOne phenolic OH and one carboxylic acid
  3. CThree phenolic OH and one ester
  4. DTwo phenolic OH and one ether

Answer: C

The compound shown is propyl gallate (propyl 3,4,5-trihydroxybenzoate). It has three phenolic OH groups on the ring and a propyl ester. The OH groups are on the aromatic ring, so they are phenolic, not alcoholic.
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