Name these compounds according to IUPAC.

The IUPAC names of the compound 8 is propional and compound 9 is propanone or ethyl methyl ketone.
International Union of Pure and Applied Chemistry, IUPAC, is naming of the organic compound by the rules of chemistry.
There are some rules, like identifying the functional group, to find the longest carbon chain.
Thus, the IUPAC names of the compound 8 is propional and compound 9 is propanone or ethyl methyl ketone.
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