Catalyzes the conversion of 4alpha-formyl-5alpha-cholesta-8-en-3beta-ol into 4alpha-carboxy-5alpha-cholesta-8-en-3beta-ol.
Catalyzes the conversion of 4alpha-methyl-cholesta-8-enol into 4alpha-hydroxymethyl-5alpha-cholesta-8-en-3beta-ol.
Catalyzes the conversion of 4alpha-formyl-4beta-methyl-5alpha-cholesta-8-en-3beta-ol into 4alpha-carboxy-4beta-methyl-5alpha-cholesta-8-en-3beta-ol.
Catalyzes the conversion of 4,4-dimethyl-4alpha-cholesta-8-en-3beta-ol into 4alpha-hydroxymethyl-5beta-methyl-5alpha-cholesta-8-en-3beta-ol.
Catalyzes the conversion of 4alpha-hydroxymethyl-5alpha-cholesta-8-en-3beta-ol into 4alpha-formyl-5alpha-cholesta-8-en-3beta-ol.
Catalyzes the conversion of 4alpha-hydroxymethyl-4beta-methyl-5alpha-cholesta-8-en-3beta-ol into 4alpha-formyl-4beta-methyl-5alpha-cholesta-8-en-3beta-ol.