TEPP, 100 µg/ml, Ethyl acetate, 5ml

Serotonin-13C2,15N hydrochloride (ethylamine-13C2,15N),100 µg base/mL,MeOH,1mL

U-(13C20)-Cyclopiazonic acid,10 µg/mL,acetonitrile,1.2mL

2,3,4,5-Tetrachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane