Unstable intermediate in the biosynthesis of LTB4 and LTC4. The naturally occuring free acid is a substrate for LTA4 hydrolase and LTC4 synthase and plays a central role in transcellular leukotrieneand lipoxin biosynthesis. Mobilizes Ca2+ in human neutrophils. Supplied as the methyl ester for greater stability. Product Specification Alternative Name:LTA4-ME MW:332.5 CAS:73466-12-3 Purity:95-98% Long Term Storage:-80°C