According to IUPAC numbering rules for alicyclic rings, what is the correct name for a cyclohexane ring with an ethyl group and a methyl group on adjacent carbons?

Question

Prashant Kotian · Accepted Answer

Correct answer: B. When two substituents are at structurally equivalent positions, the numbering is done such that the substituent coming first in alphabetical order gets the lower number. "Ethyl" precedes "methyl", so it is numbered starting at the ethyl group, making it 1-ethyl-2-methylcyclohexane.

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