Metazachlor

Biphenyl, 10.0 µg/ml, Cyclohexane, 10ml

Theophylline, 100μg/mL in Acetonitrile, 1ml

2-Ethyl-3,(5/6)-dimethylpyrazine, Isomer mixture, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. 27043-05-6 or 55031-15-7