The IUPAC name for is _______:
(i) 1-hydroxypentane-1,4-dione
(ii) 1,4-dioxopentanol
(iii) 1-carboxybutan-3-one
(iv) 4-oxopentanoic acid
The answer is the option (iv) 4-oxopentanoic acid
Explanation: According to the IUPAC naming, in case of presence of more than one different types of functional groups, one functional group will be taken as the main functional group on a priority basis and is mentioned as a suffix, while the other functional group is written as a prefix.