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Cabreuva oil is a by-product of the wood-working industry processing the wood of Myrocarpus frondosus Allem., a wild growing tree in Paraguay. It is produced by steam distillation of branches or wood chips or sawdust. Cabreuva oil is a light yellow, slightly viscous liquid with a balsamic odor, slightly reminiscent of rose and sandalwood. d²⁰₄ 0.889–0.910; n²⁰_D 1.482–1.488; α_D +2°to +8°(oils with a nerolidol content of >80%). The main constituent of cabreuva oil is (3S,6E)-(+)-nerolidol with a content of >60%. Although nerolidol is available as cheap synthetic intermediate today, cabreuva oil is still produced as a source of natural nerolidol. Annual production in Paraguay is 10–20 t.

Extractives and their physically modified derivatives. Myrocarpus frondus or Myrocarpus fastigiatus, Leguminosae.