Gentamycin sulphate, min. 590 I.U./mg, for biochemistry, Molar mass (M) 694,75-723,75 g/mol, Storage temp. +4 °C, CAS No. [1405-41-0], EG-Nr. 215-778-9, Empirical formula C19-21H39-43N5O7 · 2,5 H2SO4