Substituted aminoquinazolinone (thione) derivatives or salts thereof, intermediates thereof, and pest controllers and method for using same.
取代的氨基喹唑啉酮（硫酮）衍生物或其盐，中间体，和虫害控制剂及其使用方法。
2
Pyridopyridazinone or pyridopyridazine-thione compound, intermediate for preparing it, pharmaceutical composite containing the same and its use.
吡啶并哒嗪酮或吡啶并哒嗪硫酮化合物，制备它的中间体，含它的药物组合物及其用途。
3
L-Thiazolidine-2-thione-4-carboxylic acid ethyl ester was prepared from L-thiozolidine-2-thione-4-carboxylic acid and ethyl alcohol in the presence of the hydrate of ferric sulfate.