TEPA, 100 µg/ml, Methanol, 1ml

2,3,4,5-Tetrabromobenzoic acid [13C6 ring], 1.2ml x 50ug/ml, methanol

4-Amino-2´,3-dimethylazobenzene, certified, 0.25g

2,2-Bis(bromomethyl)-1,3-propanediol, 100mg