Extracts of Diprion similis females contained about 15 ng of the sex pheromone precursor 3. 7-dimethylpentadecan-2-ol per female. After derivatisation with (S)-2-acetoxypropanoyl chloride. we found that the major stereoisomer in the extract was (2S. https://hollandscountryclothinges.shop/product-category/shorts/