13C15-Nivalenol is intended for use as an internal standard for the quantification of nivalenol by GC- or LC-MS. Nivalenol (T13797) is a trichothecene mycotoxin that has been found inFusarium.1It is lethal to mice (LD50= 6.9 mg/kg).2Nivalenol (5,10,and 15 mg/kg)also induces thymic,splenic,and Peyer's patch cell apoptosis in mice.3
L-Thyroxine-13C9,15N is intended for use as an internal standard for the quantification of L-thyroxine by GC- or LC-MS. L-Thyroxine (T0864) is a synthetic form of the thyroid hormone thyroxine.