Which of the following is/are not the correct IUPAC name ?

Options

A. 2-Ethyl-3-methyl pentane
B. 4-Formyl pentan-2-ol
C. 3-Carboxy pentaoic acid
D. Cyclohexanoic acid

Answer

BCD

Explanation

2-ethyle -3-methyl pentane should be
(A) `overset(1)(C)-overset(2)(C)-underset(C)underset(|)(overset(3)(C))-underset(C^(6))underset(|)underset(C^(5))underset(|)(overset(4)(C))-C` 3,4-dimethyl hexane
(B) 4-formyl pentan-2-ol should be
`overset(5)(C)-underset(OH)underset(|)(overset(4)(C))-overset(3)(C)-overset(2)(C)-overset(1)(C)HO`, 4-hydroxy pentanal
(C) 3-carboxy pentanoic acid should be
`C-C-underset(.^(1)(OH))underset(|)overset(2)(C)-overset(3)(C)-overset(4)(C)OOH` 2-ethyl butadioic acid
(D) as -COOH group is attached to one carbon atom only hence the correct IUPAC name is
Cyclohexane carboxylic acid