... 142DARinv mediated ligation of the [TcT-N-propyl]-N- glycyl-GdSc2@C80n with the N-(2-Aminopropyl )-4 -( 6- (pyrimidine-2-yl )-1 ,2,4,5-tetrazine-3-yl)benzamide (4)-NLS-S∩S-CPP to the Gd-cluster@-BioShuttle ... Publisher. All rights reserved Research Paper Gain of a 500-fold sensitivity on an intravital MR Contrast Agent based on an endohedral Gadolinium-Cluster-Fullerene-Conjugate: A new chance in cancer diagnostics ... negative-ion modes (Biflex III, Bruker, Germany). Synthesis of the diene compound N-(2-Aminopropyl )-4 - ( 6-( pyrimidine-2-yl )-1 ,2,4,5-tetrazine-3-yl)benzamide (4) 4-( 6-( pyrimidine-2-yl )-1 ,4-dihydro-1,2,4,5-tetrazine-3-yl)benzoic...