水中溶解度:45 g/L (20°C)，有辛辣刺鼻的羊乳干酪样气息，低浓度时具有令人愉快的水果味。天然存在：苹果、杏子、苹果酒、可可、越橘、葡萄、葡萄白兰地、香料烟、草莓、醋和威士忌。Used in the synthesis of 2-methylbutyric anhydride Natural occurrence: Apple, apricot, cider, cocoa, cranberry, grape, grape brandy, oriental tobacco, strawberry, vinegar and whiskey. Used in the synthesis of 2-methylbutyric anhydride