Suggested Reaction 1.14.13.-

Left

4beta-Hydroxymethyl-4alpha-methyl-5alpha-cholest-7-en-3beta-ol
+H2O
+NAD+

Right

4,4-Dimethyl-5alpha-cholest-7-en-3beta-ol
+NADH
+O2
+H+
[BiSSCat | GREP ]