+An **aldehyde** is an [organic compound](/wiki/Organic_Compound) defined by a terminal [carbonyl](/wiki/Carbonyl) group, where carbon is double-bonded to oxygen and single-bonded to hydrogen. These versatile molecules are known for their distinct odors and reactivity, serving as key intermediates in industry and nature.
+## See also
+- [Ketone](/wiki/Ketone)
+- [Alcohol](/wiki/Alcohol)
+- [Carboxylic Acid](/wiki/Carboxylic_Acid)
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