Dithia-monoaza 18-Crown-6 and its immobilization product,silica-bound 1,7-dithia-4-aza-10,13,16-trioxa-cyclooctadecane via a spacer of three carbon atoms,and it
A new class of crosslinking polyphosphates were synthesized and characterized by IR ^1HNMR,^31PNMR spectroscopy as well as elemental analysis.In vitro degradati