1,2,3,4-Butanetetrol, 1,4-dimethanesulfonate, (R*,R*)- (9CI) 1,4-Bis(methylsulfonyloxy)threitol 21106-06-9 NSC 260698 Threitol 1,4-bis(methanesulfonate) Threitol, 1,4-dimethanesulfonate (8CI)