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NEET levelSingle correct optionDifficulty 1 of 3st084

In a Fischer projection of a compound with one stereocentre, two groups attached to that centre are interchanged. The new projection represents the:

  1. Asame compound
  2. Bconstitutional isomer of the original compound
  3. Cenantiomer of the original compound
  4. Ddiastereomer of the original compound

Answer: C

A single interchange of two groups at a stereocentre inverts its configuration. With only one stereocentre, the inverted structure is the non-superimposable mirror image. So it is the enantiomer.
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