<unk>  is an organic compound of carbon, nitrogen, sulfur and hydrogen, with the formula CSN2H4 or (NH2)2CS.  It is similar to urea, except that the oxygen atom is replaced by a sulfur atom.  The properties of urea and<unk>  differ significantly because of the relative electronegativities of sulfur and oxygen.<unk>  is a versatile reagent in organic synthesis. <unk> s" refers to a broad class of compounds with the general structure (R1R²N)(R³R4N)C=S.<unk> s are related to thioamides, e.g. RC(S)NR2, where R is methyl, ethyl, etc.
Thiourea
Chloroxine
Mercaptopurine
Hydroxyurea
Mepenzolate
Morinamide
Sodium thiosulphate
Leucovorin 