The present invention relates to 5-acyloxydecanoic acid ester represented by the following formula (1) which can provide the characteristic flavors such as milk feeling, fat feeling and cream feeling to drink, food and the likes, and the use of its perfume composition.[In the formula, R1 represents hydrogen and an alkyl group having carbon atoms of 1 to 4, R2 represents an alkyl group having carbon atoms of 1 to 4, excluding the case that R1 is methyl and R2 is methyl or ethyl].本發明係關於可賦予飲食品等牛奶感、脂肪感、鮮乳油感等的特徵性香味之下述式(1)所表示之5-醯氧基癸酸烷酯及其香料組成物的使用。[式中,R1係表示氫原子或碳數1~4的烷基,R2係表示碳數1~4的烷基,但在R1為甲基且R2為甲基或乙基的情況下除外]
