4-n-Nonylphenol, 1000µg/ml in MeOH, 1ml

2,4,5-T-methyl ester, 10 µg/ml, Acetonitrile, 10

Verapamil-d7 Hydrochloride, 5mg

2,3-Dibromophenol, 1.2ml x 100ug/ml, toluene