3,5-diaMino-N-carbaMothioyl-6-chloropyrazine-2-carboxaMide

3,5-Diamino-N-(aminothioxomethyl)-6-chloropyrazinecarboxamide, is a synthetic building block, and a starting material in the synthesis of the drug 552-02 (CAS#587879-54-7) which is an inhaled sodium-channel blocker currently in clinical trials.