Product Code Pack Size Sterling Euros Dollars      38180  250mg  £100  €157  $205   p-Nitrophenyl β-D-ribofuranoside p-Nitrophenyl beta-D-ribofuranoside; PNP-beta-D-ribofuranoside   CAS:  59495-69-1           MF:   C11H13NO7       MW: 271.2   >95% [HPLC]       Free p-Nitrophenol <300ppm   Chromogenic substrate for beta-D-ribofuranosidase which produces a water-soluble yellow colour on hydrolysis.   Vials show PNP beta-D-riboside with E.cloacae NCTC 11936 [left] and Y.enterocolitica NCTC 11176 [right].