1-(2-(1,3-Benzodioxol-5-yl)ethyl)guanidine sulfate (2:1) 1-(3,4-(Methylenedioxy)phenethyl)guanidine sulfate (2:1) 17228-45-4 GUANIDINE, 1-(3,4-(METHYLENEDIOXY)PHENETHYL)-, SULFATE (2:1)