The IUPAC name of is: — IUPAC and Nomenclature Chemistry Question

💡 Solution & Explanation

The aldehyde ($-CHO$) has priority over the alcohol ($-OH$) group. The principal chain contains 4 carbons, and numbering starts from the aldehyde carbon. The $-OH$ at position 3 acts as a substituent (hydroxy). Thus, 3-Hydroxybutanal.