Question

The IUPAC name of CH$_3$–C(=O)–CH$_2$–C(=O)–H is:

• A. 1-oxobutan-3-one
• B. 1-oxobutanal
• C. 3-oxobutanal
• D. 3-oxobutanone

Hint:

When naming organic compounds, functional group priority must be considered. Aldehydes (-CHO) take precedence over ketones (-C=O).

Answer 1

The Correct Option is C

In the given compound, the longest chain contains four carbon atoms, and it has both aldehyde (-CHO) and ketone (C=O) functional groups. According to IUPAC nomenclature, the aldehyde takes priority and is numbered as carbon-1, while the ketone group is assigned position-3, giving the name 3-oxobutanal.