alpha alpha alpha (20R)-Cholestane, 1000µg/mL in Isooctane, 1ml

Ethanol standard in water,2.0g/L,water, 1.5mL

Nicotinamide, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 98-92-0

Heptachlor, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 76-44-8