CAS 867-44-7 appears in our catalog under these names: S-Methyl-isothiouronium Hemisulfate, S-Methylisothiourea sulfate/ 99.58% (existing batch purity), (S)–Methylisothiourea sulfate, S-Methylisothiouronium sulfate, 98+% , S-Methylisothiouronium sulfate. Offered by: TRC, TargetMol, GLPBio, Thermo Scientific (Alfa Aesar), Biosynth. Available pack sizes: 10mg, 1g, 50mg, 100mg, 200mg, 500mg, 10mM (in 1ml water), 2500g.