Biological activity of synthetic adrenaline is almost:
Show Hint
25% of S-adrenaline
25% of R-adrenaline
50% of S-adrenaline
50% of Natural R-adrenaline
The Correct Option is D
Solution and Explanation
Step 1: Understanding adrenaline's stereoisomers and activity. Adrenaline exists as stereoisomers, and its biological activity is dependent on the stereochemistry. The natural adrenaline (R-enantiomer) is more biologically active compared to the synthetic mixture, which usually contains both R and S enantiomers.
Step 2: Synthetic adrenaline's biological activity. Synthetic adrenaline is typically a racemic mixture (50% R and 50% S). Since only the R-enantiomer is biologically active, the biological activity of synthetic adrenaline is approximately 50% of the natural R-adrenaline.
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