阿摩線上測驗
12. What is the complete systematic IUPAC name for the following compound?
(A) (S)-4-ethyl-4-isopropoxycyclopent-2-en-1 -one
(B) (R)-4-ethyl-4-isopropoxycyclopent-2-en-l -one
(C) (S)-3-ethyl-3-isopropoxycyclopent-4-en-l-one
(D)(R)-3-ethyl-3-isopropoxycyclopent-4-en-l-one
(E) (R)- 4-isopropoxy-4-ethyl-cyclopent-2-en-l-one
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統計： A(0), B(0), C(0), D(1), E(0) #3222620
統計： A(0), B(0), C(0), D(1), E(0) #3222620
