4.
[1]. T J McMurry, et al. Synthesis of 2-(p-thiocyanatobenzyl)-1,4,7-triazacyclononane-1,4,7-triacetic acid: application of the 4-methoxy-2,3,6-trimethylbenzenesulfonamide protecting group in the synthesis of macrocyclic polyamines. Bioconjug Chem. 1993 May-Jun;4(3):236-45.
P261-P272-P273-P2-P32+P352-P362+P364-P51
GHS7