FIELD: organic chemistry, chemical technology. SUBSTANCE: product: 2-amidinothiourea. Reagent 1: dicyanodiamide. Reagent 2: ammonium hydrosulfite. Reaction conditions: pH = 7.8-10.0, at 35-90 C in the presence of sulfur. Yield is 25.3-43.6% at content of the basic substance 99%, not less. Synthesized compound is used in medicine and chemical industry. EFFECT: improved method of synthesis, increased yield. 2 cl, 1 tbl
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