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The IUPAC name of the compound CH(3)un...

The `IUPAC` name of the compound
`CH_(3)underset(OH)underset(|)(CH)=CHCH_(2)COOH`
is

A

(1) hydroxypentenoic acid

B

(2) `4`-hydroxypent-`3`-enoic acid

C

(3) `4`-hydroxypent-`4`-enoic acid

D

(4) `4`-hydroxy-`4`-methyl-`3`-enepentenoic acid

Text Solution

Verified by Experts

The correct Answer is:
B
The compound is an unsaturated carboxylic acid (alkenoic acid). The `C` of the `-CO_(2)H` group is always numbered `1`.
`overset(5)(CH_(3))underset("4-Hydroxypent-3-enoic acid")(underset(OH)underset(|)overset(4)(CH)=overset(3)CHoverset(2)CH_(2)overset(1)COOH`
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