N-Nitroso-diethanolamine, 100μg/ml in MeOH, 5ml

d4 C29 alpha alpha alpha (20R)-Ethylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no.

2 alpha,17ß(H),21 alpha(H)-2-Methylhopane, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no.

2,4'-DDD, 100 µg/ml, Ethyl acetate, 5ml