What is the IUPAC name of the given compound?

The correct answer is Option (3) → N,N-Dimethylmethanamine

The compound is \( \ce{(CH3)3N} \), a tertiary amine with three methyl groups on nitrogen (common name trimethylamine).

• Parent: each carbon chain on nitrogen has one carbon, so one methyl group is taken as the parent: methanamine.

• Substituents on nitrogen: the other two methyl groups get the locant N each: N,N-dimethyl.

NCERT (2026-27 edition):
9.3 Nomenclature – “To name secondary and tertiary amines, we use locant N to designate substituent attached to a nitrogen atom. For example, CH₃NHCH₂CH₃ is named as N-methylethanamine and (CH₃CH₂)₃N is named as N, N-diethylethanamine. More examples are given in Table 9.1.”

Table 9.1: Nomenclature of Some Alkylamines and Arylamines