Linked from
The 13 pages that link to Carboxylate, each with the reason it gives.
SoapRelated: The charged carboxylate head gives common soaps their water-attracting end.
SaponificationRelated: The fatty-acid products are carboxylates paired with metal cations.
Potassium sorbateRelated: The sorbate ion is the carboxylate form of sorbic acid.
Haloform reactionRelated: The acyl fragment remains as a carboxylate under basic conditions.