Also available in 25 mg 50 mg and bulk. Please contact Fisher for quotes. D-(-)-3-Phosphoglyceric acid disodium (3-Phospho-D-glyceric acid disodium) is an intermediate in several biological pathways most notably glycolysis/gluconeogenesis and the biosynthesis of serine glycine and threonine which competitively inhibits yeast enolase. It also has numerous roles as an intermediate in biosynthetic pathways in plants eukaryotes and prokaryotes. purity: 99%