Pyrazole-3-boronic acid hydrochloride, 97%..
Pyrazolo[1,5-a]pyrimidine-2-carboxylic acid, 97%..
Pyrazolo[1,5-a]pyrimidine-3-carboxylic acid, 95%..
Pyrazolo[1,5-a]pyrimidine-5-carboxylic acid, 97%..
Pyridine, 99+%, extra pure, nonaqueous titration grade..