Benzal chloride,1000 µg/mL,isooctane,1mL,

(+/-)-Normetanephrine-a,β,β-d3 HCl, 100µg/ml in Me

4,6-Dihydroxypyrazolo[3,4-d]pyrimidine-13C,15N2, 1mg

2,3',4,4',5-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane