Product Code Pack Size Sterling Euros Dollars      38110  250mg  £85  €132  $174   p-Nitrophenyl α-D-xylopyranoside p-Nitrophenyl alpha-D-xylopyranoside; p-Nitrophenyl alpha-D-xyloside; 4-Nitrophenyl alpha-D-xylopyranoside; PNP alpha-D-xylopyranoside CAS: 10238-28-5 MF: C11H23NO7 MW: 271.20 >98% [HPLC]. Free PNP < 200ppm.