Red Seal Hairstylist Practice Exam

What is the systematic IUPAC name for the molecule with the structural formula CH₃CH(OH)CH₂CHO?

3-hydroxybutanal 2-hydroxybutanal 4-hydroxybutan-2-one 3-hydroxybutan-1-one

3-hydroxybutanal

The aldehyde group gets priority and is on carbon 1. The hydroxyl group is on carbon 3 of the four-carbon chain, making it 3-hydroxybutanal.

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