Fluorescein diphosphate is a colorless and nonfluorescent substrate for alkaline phosphatases, sequential alkaline phosphatase mediated hydrolysis of its two phosphate substituents yielding weakly fluorescent fluorescein monophosphate followed by strongly fluorescent fluorescein (excitation/emission ~490/514 nm). References: Yang X, Shen S, Guo L, Tan J, Lei H, Wu J, Zhao L, Xiong T, Wu Y, Cheng Y, Zhang Y. An Enzyme-Responsive "Turn-on" Fluorescence Polymeric Superamphiphile as a Potential Visualizable Phosphate Prodrug Delivery Vehicle. Macromol Biosci. 2018 Jun;18(6):e1800045. doi: 10.1002/mabi.201800045. Epub 2018 May 7. PubMed PMID: 29732741.

纯度：≥98%

CAS：217305-49-2