The C-type of open loop cucurbituril has adjustable flexible cavities and is easy to modify. Its C-type cavity can be adjusted according to the size of the guest molecule, forming a good cavity match with the guest molecule, regulating the water solubility, biocompatibility, and luminescence behavior of the guest molecule. The company can provide customers with professional customized services for open-loop gourd urea. For further inquiries, please contact customer service.