29- or 31-Norcycloartenol[note 1], also called 4α,14α-dimethyl-9β,19-cyclo-5α-cholest-24-en-3β-ol, is a Metabolic intermediate of plant sterol biosynthesis.

[1][2][3][4] In the pathway, it is transformed from demethylation of cycloartenol, then 9,19-cyclopropyl-ring opening reaction occurs to 29-Norlanosterol.

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