Linkers (Miscellaneous) and its Impurities
Linkers, also referred to as spacers, are molecules or segments of molecules that connect two or more functional units within a larger molecular structure or complex. Reference standards of Linkers (Miscellaneous) API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


N-(2-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)ethyl)-6-((4R,5S)-5-methyl-2-oxoimidazolidin-4-yl)hexanamide
N-(2-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)ethyl)-6-((4R,5S)-5-methyl-2-oxoimidazolidin-4-yl)hexanamide
Catalogue No.:PA 27 0030934
CAS :
1426828-06-9
Molecular Formula : C18H34N6O5
Molecular Weight : 414.51


2,5-Dioxo-1-pyrrolidinyl 20-(11,12-didehydrodibenz[b,f]azocin-5(6H)-yl)-17,20-dioxo-4,7,10,13-tetraoxa-16-azaeicosanoate
2,5-Dioxo-1-pyrrolidinyl 20-(11,12-didehydrodibenz[b,f]azocin-5(6H)-yl)-17,20-dioxo-4,7,10,13-tetraoxa-16-azaeicosanoate
Catalogue No.:PA 27 0030744
CAS :
1427004-19-0
Molecular Formula : C34H39N3O10
Molecular Weight : 649.70


3,3'-((2-amino-2-(15-oxo-2,5,8,11,18-pentaoxa-14-azanonadecan-19-yl)propane-1,3-diyl)bis(oxy))bis(N-(2,5,8,11-tetraoxatridecan-13-yl)propanamide)
3,3'-((2-amino-2-(15-oxo-2,5,8,11,18-pentaoxa-14-azanonadecan-19-yl)propane-1,3-diyl)bis(oxy))bis(N-(2,5,8,11-tetraoxatridecan-13-yl)propanamide)
Catalogue No.:PA 27 0030746
CAS :
1428661-67-9
Molecular Formula : C40H80N4O18
Molecular Weight : 905.09


2,3,5,6-Tetrafluorophenyl 3-[2-[2-[[3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]amino]ethoxy]ethoxy]propanoate
2,3,5,6-Tetrafluorophenyl 3-[2-[2-[[3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]amino]ethoxy]ethoxy]propanoate
Catalogue No.:PA 27 0030750
CAS :
1431291-44-9
Molecular Formula : C20H20F4N2O7
Molecular Weight : 476.38


3,6,9,12,15,18,21,24,27,30,33-Undecaoxapentatriacontane-1,35-diyl bis(4-methylbenzenesulfonate)
3,6,9,12,15,18,21,24,27,30,33-Undecaoxapentatriacontane-1,35-diyl bis(4-methylbenzenesulfonate)
Catalogue No.:PA 27 0030789
CAS :
1456708-45-4
Molecular Formula : C38H62O17S2
Molecular Weight : 855.02