3,3'-Dimethylbenzidine, 100mg

N-Nitroso-N-methylurea

5-Methylbenzotriazole-4,6,7-d3-methyl-d3,100 µg/mL,isooctane,1mL,

Metoprolol-d7 hydrochloride (isopropyl-d7),1000 µg base/mL,MeOH,1mL