The $IUPAC$ name of the given compound $CH_2=CH-CH_2-COOH$ is:

Write $IUPAC$ names of the following compounds:
$(i)$ $(CH_3)_2CH-CH=CH-CH_2-CH=C(CH_3)-CH(C_2H_5)-CH_3$
$(ii)$ The structure is shown below:
$(iii)$ $CH_2=C(CH_2CH_2CH_3)_2$
$(iv)$ $CH_3-CH(CH_3)-CH=C(C_2H_5)-CH_2-CH(CH_3)-CH_2CH_2CH_3$

What is the $IUPAC$ name of the given compound?

Which of the following is the correct order of priority for groups in $R-S$ nomenclature?

The structure of $4-$Methylpent$-2-$enal is:

Give the $IUPAC$ name of the compound: $CH_3CH=CHCOOC_2H_5$