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Exhibit 30-9 Vitamin D3,cholecalciferol,is Synthesized Under the Skin by the Photochemical Pericyclic

Question 4

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Exhibit 30-9
Vitamin D3,cholecalciferol,is synthesized under the skin by the photochemical pericyclic process shown below.Answer the following question(s) about these reactions. Exhibit 30-9 Vitamin D<sub>3</sub>,cholecalciferol,is synthesized under the skin by the photochemical pericyclic process shown below.Answer the following question(s) about these reactions. -Refer to Exhibit 30-9.The first step in this process is a(n) : A) sigmatropic rearrangement B) cycloaddition reaction C) annulation reaction D) electrocyclic reaction
-Refer to Exhibit 30-9.The first step in this process is a(n) :


A) sigmatropic rearrangement
B) cycloaddition reaction
C) annulation reaction
D) electrocyclic reaction

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