試題詳解

6. Which one of the following compounds is a fatty acid?
(A) CH₃(CH₂)₉COOH
(B) CH₃(CH₂)₁₁COOH
(C) CH₃(CH₂)₁₃COOH
(D) CH₃(CH₂)₁₅COOH
(E) CH₃(CH₂)₁₆COOH