Quebrachitol or 2-O-methyl-l-inositol is the most important single component among nonisoprenes, constituting more than 1.2% of latex (see Box 1). Concerning carbohydrates, latex cytosol contains sucrose (0.3–0.4% of latex weight), which is the sugar supply for the rubber biosynthesis pathway as the source of pyruvate (see rubber biosynthesis section)