CH3 by itself is not a complete molecule, it's a methyl group.

It's a common functional group in organic chemistry. It's often found attached to other molecules.

Here are some examples of molecules containing a methyl group:

* Methane (CH4): A single carbon atom bonded to four hydrogen atoms.

* Methanol (CH3OH): A methyl group attached to a hydroxyl group (-OH).

* Ethane (CH3CH3): Two methyl groups attached to each other.

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