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

Zaleplon-?d5 (N-?ethyl-?d5),100 µg/mL,MeOH,1mL

d2 C29 alpha alpha alpha (20R)-Ethylcholestane, 10µg/mL in Osooctane, 1ml

Lanosterol, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 79-63-0