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(D) $1$. Identify the principal functional group: The aldehyde group $(-CHO)$ has the highest priority,so the parent chain must include it and start n

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$2-$ethyl$-5-$hydroxy$-3-$methylhept$-3-$enal

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(D) $1$. Identify the principal functional group: The aldehyde group $(-CHO)$ has the highest priority,so the parent chain must include it and start numbering from the carbonyl carbon as $C-1$.$2$. Select the longest carbon chain containing the principal functional group and the double bond: The longest chain containing the $-CHO$ group and the $C=C$ bond has $7$ carbon atoms (heptenal).$3$. Numbering the chain: Starting from the aldehyde carbon $(C-1)$,the double bond starts at $C-3$,the methyl group is at $C-3$,the hydroxyl group is at $C-5$,and the ethyl group is at $C-2$.$4$. Assemble the name: Alphabetical order for substituents is ethyl,hydroxy,methyl. Thus,the name is $2-$ethyl$-5-$hydroxy$-3-$methylhept$-3-$enal.

List-$I$ (structure)	List-$II$ ($IUPAC$ Name)
$A$. $CH_3CH_2CH(CH_2CH_3)CH_2CH(CH_3)CH_2CH_3$	$I$. $4-$Methylpent$-1-$ene
$B$. $(CH_3)_2C(C_3H_7)_2$	$II$. $3-$Ethyl$-5-$methylheptane
$C$. $CH_2=C(CH_3)CH=CHCH_3$	$III$. $4,4-$Dimethylheptane
$D$. $CH_2=CHCH_2CH(CH_3)CH_3$	$IV$. $2-$Methyl$-1,3-$pentadiene

The $IUPAC$ name of the given compound is

Similar Questions

The given structure has the $IUPAC$ name:

Identify the functional group in the following compounds. Write its name,suffix,and prefix for each.
$(a)$ $CH_3CH_2CH_2COCl$
$(b)$ $CH_3CH_2CH_2CONH_2$
$(c)$ $CH_3CH_2CH_2CHO$

What is the number of carbon atoms in the longest chain of the given compound?
$CH_3 - CH_2 - CH_2 - C(=O) - CH(CHO) - CH_2 - CH_3$ (Note: The structure provided in the input was interpreted as a heptane derivative with a substituent).

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

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