4-Hydroxyantipyrine (Standard)

4-Hydroxyantipyrine (Standard) is the analytical standard of 4-Hydroxyantipyrine. This product is intended for research and analytical applications. 4-Hydroxyantipyrine (4-Hydroxyphenazone; NSC 174055) is the major metabolite of Antipyrine (HY-B0171), can be as a biodistribution promoter. 4-Hydroxyantipyrine can increase distribution of concentration ratio of Citicoline and Antipyrine in the brain.