potassium,1-carboxyethenyl hydrogen phosphate, PEP monopotassium salt,PEP-K,Phospho(enol)pyruvate potassium salt, mono-Potassium phosphoenolpyruvate, PHOSPHOENOLPYRUVIC ACID MONOPOTASSIUM SALT, 2-(Phosphonooxy)-2-propenoic acid monopotassium sal, Potassium 1-carboxyvinyl hydrogenphosphate