thymopentin 
 
1-2-(2,5-dioxopyrrolidine-1-yloxycarbonyl)-benzyloxy-2,2,6,6-tetramethylpiperidine-4-carboxylicacid2,5-dioxopyrrolidine-1-ylester 
 
67368-29-0 
 
AFRM-TEMPO-Bz-RKDVY 
 
YVDKR-TEMPO-Bz-MRFA 
[1]Ihling,Christian;Falvo,Francesco;Kratochvil,Isabel;Sinz,Andrea;Schäfer,Mathias[JournalofMassSpectrometry,2015,vol.50,#2,p.396-406]