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A: Acid-catalyzed isomerization of (E)- to (Z)-10-NO2-OA. B: Relative composition of isomer mixtures under acidic hydrolysis conditions. C: (E)/(Z) 10-NO2-OA isomer equilibrium in the presence of hydrochloric acid. Data shown are the mean (n = 3) ± SE of three and two independent experiments for A and B, respectively.
