iupac naming examples
There is a propyl substituent on the inside double bond carbon atom (#2), so the IUPAC name is: 2-propyl-1-pentene. Illustration 3 (C2H5)2C=CHCH(CH3)2. Illustration 4 CH2=C(CH3)CH(CH3)C(C2H5)=CH2. The next two examples illustrate additional features of chain numbering.