Thiourea is a compound formed by replacing the oxygen atom in urea with sulfur, belonging to the class of thioamides (RC(S)NR₂, where R is a hydrocarbon group). Due to differences in electronegativity, despite their structural similarities, the properties of thiourea and urea are markedly distinct. Thiourea is widely used in organic synthesis. Additionally, thiourea can also refer to a class of organic compounds with the general formula (R¹R²N)(R³R⁴N)C=S, which are derivatives of simple thiourea where the hydrogen atoms are substituted by hydrocarbon groups.

Applications：

1. 1.Metal corrosion inhibitor in electroplating and cleaning

2. 2.Pharmaceutical synthesis (e.g., antithyroid drugs)

3. 3.Component in pesticides/fungicides

4. 4.Photographic developer agent

5.Rubber vulcanization accelerator