EPA Method 551.1 Internal Standard

(R)-1-[(10-Chloro-4-oxo-3-phenyl-4H-benzo[a]quiniliizin-1-yl]carbonyl-2-pyrrolidinemethanol, Comet assay grade, 0.1mM, Solvent-DMSO, Unit 1mL certan, # of units-1, Cas.no. 104604-06-2

Pyridalyl, 100 µg/ml, Ethyl acetate, 5ml

2-Isobutyl-3,5-dimethylpyrazine and 2-isobutyl-3,6-dimethylpyrazine, Isomer mixture, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no.