Tri-tert-butyl 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)hydrazine-1,1,2-tricarboxylate 5g

Tri-tert-butyl 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)hydrazine-1,1,2-tricarboxylate 5g