1 2 3 triazole nmr July 8, 2019 16 32 64 128 1-benzyl-4-phenyl-1 2 3-triazole nmr 1-benzyl-5-phenyl-1h-1 2 3-triazole nmr 3-amino-1 2 4-triazole nmr 1 2 4-triazole nmr 1 2 3-triazole 1 2 3-triazoles 13 nmr spectroscopy