+A carboxyl group, a precise arrangement of carbon, oxygen, and hydrogen (-COOH), is nature's touchstone for acidity. It defines [Organic Acid](/wiki/organic_acid)s and stands as a pivotal component of [Amino Acid](/wiki/amino_acid)s, weaving life's very threads.
+## See also
+- [Functional Group](/wiki/functional_group)
+- [Carbonyl Group](/wiki/carbonyl_group)
+- [Hydroxyl Group](/wiki/hydroxyl_group)
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