1,3,6,8 pyrenetetrasulfonic acid (sodium salt hydrate)

1,3,6,8-Pyrenetetrasulfonic acid is an intermediate in the synthesis of the color additive pyranine.1It has been used to stabilize intermolecular interactions for the crystallization ofL. mexicanapyruvate kinase.2 1.Jitian, S., White, S.R., Yang, H.-H.W., et al.Conventional high-performance liquid chromatography versus derivative spectrophotometry for the determination of 1,3,6-pyrenetrisulfonic acid trisodium salt and 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt in the color additive D&C Green No. 8 (Pyranine)J. Chromatogr. A1324238-241(2014) 2.Morgan, H.P., McNae, I.W., Hsin, K.-Y., et al.An improved strategy for the crystallization of Leishmania mexicana pyruvate kinaseActa Crystallogr. Sect. F Struct. Biol. Cryst. Commun.66(Pt 3)215-218(2010)