o-Tolidine,>=95%

L-Threonine,reagent grade, >=98% (HPLC)

2,3,5-Triphenyltetrazolium chloride,>=98.0% (HPLC)

Tyramine,>=98.0%

Uracil,>=99.0%

Uric acid,>=99%, crystalline

Uridine,>=99%

L-Valine,reagent grade, >=98% (HPLC)

Xylitol,>=99% (GC)

D-(+)-Xylose,BioXtra, >=99% (GC)

Xanthine,>=99%

D-(+)-Raffinose pentahydrate,>=98.0% (HPLC)