This invention provides 6, 8, 10-undecatrien-3-ol and 6, 8, 10-undecatrien-4-ol. These compounds not only possess the accompanied woody green note but also have the overflowing fruits fragrance of a natural fresh feeling, and the flavoring composition that mixes these compounds is useful as the flavoring for such as the eating and drinking goods, the flavoring cosmetic goods, and the medicines etc.本發明提供6,8,10-十一碳三烯-3-醇及6,8,10-十一碳三烯-4-醇,這些化合物不僅具有伴隨木頭風味青香韻(green note),且具有充滿天然感、新鮮感之水果般香氣,將此配合之香料組成物有效作為飲食品、香妝品及醫藥品等之賦香用香料使用。