1,1-Dimethylguanidinium sulphate (2:1) 598-65-2 6145-42-2 AI3-60217 EINECS 209-946-0 Guanidine, 1,1-dimethyl-, sulfate (2:1) Guanidine, N,N-dimethyl-, sulfate (2:1) N(1),N(1)-Dimethylguanidine sulfate (2:1) NSC 3715