Fmoc-TOAC-OHisausefultoolfortheincorporationoftheESRspin-labelTOACintopeptidesequences[1].IncorporationofthisderivativeandthefollowingresidueisbestachievedusingHATUactivation.TFA/water/TISshouldbeusedforcleavageofTOAC-containingpeptides.TheuseofEDTshouldbeavoidedasitcancausepermanentreductionofthenitroxiderADIcal[2].Followingcleavage,theTOACpeptideshouldbetreatedwithaqueousammoniainairtoregeneratethenitroxidefromthehydroxylaminethatisgeneratedbytheTFAtreatment.
Disposal
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RelativelyunreactiveorganicreagentsshouldbecollectedincontainerA.Ifhalogenated,theyshouldbecollectedincontainerB.ForsolidresiduesusecontainerC.