Question

Draw the correct structure for 4-methyl-2-heptanone or 4-methylheptan-2-one.

Answer 1

See structure in attachment

Step-by-step explanation:

The numbering from the right hand assigns number 2 on the -one functional group and number 4- on methyl substituent

Answer 2

See attached picture.

Step-by-step explanation:

Hello,

In this case, accounting for the IUPAC rules for the nomenclature of ketones, for the given name the structure is shown on the attached picture wherein the methyl is seen at the fourth carbon and the carbonyl at the second one in the 7-carbon chain.

Best regards.