2,3-Dihydro-4-amino-3-ethyl-2-thioxo-5-thiazolecarboxamide hydrate 4-Amino-3-ethyl-2-thioxo-2,3-dihydro-5-thiazolecarboxamide hydrate 5-Thiazolecarboxamide, 2,3-dihydro-4-amino-3-ethyl-2-thioxo-, hydrate 64686-81-3