Emtricitabine is one component in Truvada, a drug used for HIV pre-exposure prophylaxis (prevention). What functional group(s) are present

2-(hydroxymethyl)-1, 3-oxathiolan-5-yl group.

Explanation:

2-(hydroxymethyl)-1,3-oxathiolan-5-yl group is a functional group of Emtricitabine. Emtricitabine is an antiviral medicine that treat human immunodeficiency virus (HIV) disease by preventing multiplication in your body. Emtricitabine comprise of organofluorine compound in which 5-fluorocytosine is substituted at the 1st position by a 2-(hydroxymethyl)-1,3-oxathiolan-5-yl group.

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