9 Many simple saturated carboxylic acids are e. also found in nature. For example, acetic o acid is the chief organic component of g vinegar; butanoic acid is responsible for the Ei rancid odor of sour butter, and hexanoic acid (caproic acid) is responsible for the unmistakable aroma of goats and dirty gym socks CH3 COOH CH3 CH, CH COOH 惜酸 丁酸 Acetic acid Butanoic acidOrganic Chemistry Organic Chemistry Xiamen Xiamen University University Many simple saturated carboxylic acids are also found in nature. For example, acetic acid is the chief organic component of vinegar; butanoic acid is responsible for the rancid odor of sour butter; and hexanoic acid (caproic acid) is responsible for the unmistakable aroma of goats and dirty gym socks. CH 3COOH CH 3CH 2CH 2COOH 醋酸 丁酸 Acetic acid Butanoic acid