1.CAS NO: 103750-03-4 1H-Pyrrole-1-pentanoicacid, 2,5-dihydro-2,5-dioxo-, 2,5-dioxo-1-pyrrolidinyl ester
2.CAS NO: 1308299-09-3 Propargyl-PEG4-bromide
3.CAS NO: 1817735-30-0 Propargyl-PEG1-SS-PEG1-PFP ester
4.CAS NO: 110429-45-3 Triethylene Glycol 2-Bromoethyl Methyl Ether
5.CAS NO: 169901-27-3 DC1
