The enzyme CMP-N-acylneuraminate phosphodiesterase (EC 3.1.4.40) catalyzes the reaction
This enzyme belongs to the family of hydrolases, specifically those acting on phosphoric diester bonds. The systematic name of this enzyme class is CMP-N-acylneuraminate N-acylneuraminohydrolase. Other names in common use include CMP-sialate hydrolase, CMP-sialic acid hydrolase, CMP-N- acid hydrolase, , , cytidine monophosphate-N-acetylneuraminic acid hydrolase, and CMP-N-acetylneuraminate hydrolase.