How many sigma bonds are there in tryptophan?

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Answer 1 · 2014-07-25T19:15:38

There are 28 sigma bonds in a molecule of tryptophan.

The structure of tryptophan is

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Every single bond has one sigma bond, and every double bond has one sigma bond.

There are

4 C=C double bonds
1 C=O double bond
7 C-C single bonds
3 C-N single bonds
1 C-O single bond
7 C-H single bonds
4 N-H single bonds
1 O-H single bond

Thus, there are 28 sigma bonds in a molecule of tryptophan.