What is the IUPAC name of the compound CH₃CH(CH₃)CH₂CHO?
The longest chain containing the aldehyde group has 4 carbons, so the base name is butanal. The methyl group is on the second carbon from the aldehyde end. Thus, the name is 3-methylbutanal.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Chemical Reactions - Reduction, Oxidation and Tests - Tollens, Fehling, Iodoform