The enzyme acylcarnitine hydrolase (EC 3.1.1.28) catalyzes the reaction
This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name is O-acylcarnitine acylhydrolase. Other names in common use include high activity acylcarnitine hydrolase, HACH, carnitine ester hydrolase, palmitoylcarnitine hydrolase, palmitoyl-<small>L</small>-carnitine hydrolase, long-chain acyl-<small>L</small>-carnitine hydrolase, and palmitoyl carnitine hydrolase.