How many chiral centers does sucrose have?

1 Answer
Jan 21, 2016

Sucrose has nine chiral centres.

Explanation:

Sucrose consists of a glucose unit attached to a fructose unit.

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The chiral centres are the carbon atoms with four different groups attached.

There are no internal mirror images, so every carbon atom is different.

The chiral centres in sucrose are

  • Carbons #1, 2, 3, 4, 5# in the glucose unit
  • Carbons #2, 3, 4, 5# in the fructose unit.

That makes a total of nine chiral centres in sucrose.