2-Amino-3-hydroxy-2-(hydroxymethyl)propyl Phosphate Barium Salt is a Fosfomycin (F727500) impurity. Fosfomycin is an antibiotic that exerts a broad spectrum of antibacterial activity. Melting Point: 156-162°C Solubility:WaterStability: HygroscopicStorage and Stability:Store at -20°C under inert atmosphere. Caution: Hygroscopic. For maximum recovery of product, centrifuge the original vial prior to removing the cap.