2-Phosphoglyceric acid (2PGA) is a glyceric acid which serves as the substrate in the ninth step of glycolysis. It is catalyzed by enolase into phosphoenolpyruvate (PEP) the penultimate step in the conversion of glucose to pyruvate.

Iodoantipyrine is a commonly-used indicator and is used to evaluate in rats by measuring torcular venous efflux after systemic injection of the indicator under conditions of normal and high CBF.

Extracted from Pig bile; Suitability:Ethanol,ether,three oxygen methane,acetone,acetic acid,alkali hydroxide and alkali carbonate solution;Store the product in sealed,cool and dry condition