1-(3-Methylphenyl)-4-guanylpiperazine hemisulfate 1-Piperazinecarboxamidine, 4-(m-tolyl)-, hemisulfate 17238-51-6 4-(m-Tolyl)-1-piperazinecarboxamidine hemisulfate 4-m-Tolyl-1-piperazinecarboxamidine sulfate (2:1)