CAS 55920-24-6 appears in our catalog under these names: Disodium (Ethoxyoxydophosphanyl)formate, Disodium (ethyl phosphono)formate, Foscarnet impurity B, Foscarnet impurity B 95%. Offered by: Mikromol, GLPBio, Biosynth, Ambeed, Sigma-Aldrich. Available pack sizes: 25mg, 100mg, 500mg, 250mg, 1g, 5g, 1EA.