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Question

The IUPAC name of the compound ClCH2CH2CH2CH2OH is

A
3-chlorobutanal
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B
chlorobutan-4-ol
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C
4-chlorobutan-1-ol
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D
chlorobutanal
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Solution

The correct option is C 4-chlorobutan-1-ol
The given compound has an alcohol group as well as a halogen atom in it. In this case, more preference will be given to alcohol, i.e., numbering starts from carbon atom containing -OH group.

The compound will have a prefix '4-chloro' as a chlorine atom is attached to the fourth carbon atom.

The primary suffix of the compound is '-an-' as it contains only C-C single bonds.

The secondary suffix of the compound will be '-1-ol' as it has an alcohol group attached to the first carbon atom.

The word root of the compound will be 'but' as there are four carbon atoms in the parent chain.

Hence, the IUPAC name of the compound ClCH2CH2CH2CH2OH is 4-chlorobutan-1-ol.

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