# What are all the functional groups in penicillamine?

Jun 30, 2018

Three different functional groups.

#### Explanation:

On the image above the three different functional groups are highlighted.

Here we have an amine group $- N {H}_{2}$ (Green).

Here there is a Thiol group $- S H$ (Blue)

and at last there are an carboxylic acid group $- C O O H$ (Yellow)

Then there are two methyl groups $- C {H}_{3}$. But those are normally not considered as "functional groups".