<p><b>己酸</b>是六個碳的直鏈羧酸，分子式為C<sub>5</sub>H<sub>11</sub>COOH，由己烷衍生得到。它在常溫下是無色油狀液體，帶有類似羊的氣味。己酸是脂肪酸，自然發現於動物脂肪及油中，是造成腐爛銀杏肉質種子外皮難聞氣味的化學品之一。</p>
<h2><span id=".E5.8F.82.E8.80.83.E8.B5.84.E6.96.99"></span><span id="参考资料">參考資料</span></h2>
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**己酸**是六個碳的直鏈羧酸，分子式為 C5H11COOH，由己烷衍生得到。它在常溫下是無色油狀液體，帶有類似羊的氣味。己酸是脂肪酸，自然發現於動物脂肪及油中，是造成腐爛銀杏肉質種子外皮難聞氣味的化學品之一。

## 參考資料
142-62-1