Thioureas (i.e., Hnh-c(=s)-hnh, Wherein Substitution May Be Made For Hydrogen Only) Patents (Class 564/17)
Carbonyl, sulfur, or cyano attached directly to thiourea nitrogen by nonionic bonding (Class 564/23)
- Nitrogen attached indirectly to the thiocarbonyl by nonionic bonding (Class 564/27)
- Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) (Class 564/28)
- Halogen attached indirectly to the thiocarbonyl by nonionic bonding (Class 564/29)