刃天青钠盐，Resazurin sodium salt；certified by the Biological Stain Commission, Dye content, 75%

Resazurin is a small N-oxide derivative of dihydroxyphenoxazone, which is commercially available as sodium salt. It forms the red, fluorescent hydroxyphenoxazone resorufin on reduction and colorless hydroresorufin on further reduction.

 

Resazurin possesses a redox indicator character which is widely applicable in the field of biology and medicine. It is also suitable for viability assays apart from the detection of bacterial reduction in milk and has been used as a component in culture media for the detection of viable bacteria.Resazurin is used for the measurement of metabolic activity and the proliferation of living cells. The bioreduction of the dye reduces the amount of the oxidized form (blue) and concomitantly increases the fluorescent intermediate (red).

用于测量活细胞的代谢活性和增殖。染料的生物还原减少了其氧化形式（蓝色）的含量，同时增加了荧光中间体（红色）水平。