Which are the correct IUPAC names of the following compound?

Options

A. 5-Butyl-4-isopropyldecane
B. 5-Ethyl-4-propyldecane
C. 5-sec-Butyl-4-iso-propyldecane
D. 4-(1-methylenthyl)-5-(1-methylpropyl)-decane

Answer

C, D

Explanation

5-sec-Butyl-4 iso -propyldecane
4-(1-methylenthyl)-5-(1-methylpropyl)-decane
Although IUPAC name for sec-butyl and isopropyl groups are 1 methyl propyl and 1-methylenthyl respectively yet both these name , are also recommended for IUPAC nomenclature.