alkyl thiourea

例句：

1. 1. This compound is used as a catalyst in the synthesis of alkylthioureas.
   这种化合物在合成烷基硫脲时用作催化剂。
2. 2. Alkyl thioureas are widely used as pesticides and herbicides.
   烷基硫脲广泛用于农药和除草剂中。
3. 3.The reaction mechanism of alkylthioureas involves the formation of ion pairs between the anion and the aromatic ring.
   烷基硫脲的反应机制涉及阴离子与芳香环之间的离子对形成。