Tos-pentane-azide CAS:1407974-54-2 from Axispharm is a high-purity linker containing tosyl and azide groups. Tosyl is a good leaving group for nucleophilic substitution reactions. Azido groups can react with alkynes, BCN, DBCO to form stable triazole bonds by Click Chemistry.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
