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Polyurethane-68 is a complex polymer that is made by reacting the trimer of hexamethylene diisocyanate (HDI isocyanurate trimer) with PPG-30 Butyl Ether. Some of the remaining isocyanate groups from the first reaction are reacted with 2-pyridylethanol and

ChEBI:GDP is a purine ribonucleoside 5'-diphosphate resulting from the formal condensation of the hydroxy group at the 5' position of guanosine with pyrophosphoric acid. It has a role as an Escherichia coli metabolite, a mouse metabolite and an uncoupling protein inhibitor. It is a guanosine 5'-phosphate and a purine ribonucleoside 5'-diphosphate. It is a conjugate acid of a GDP(2-).