Home :: Restek :: LC Columns :: Raptor 90Å Series (Superficially Porous Particle) :: Raptor EtG-EtS 90Å Series (ethyl glucuronide (EtG) and ethyl sulfate (EtS) analysis) :: Restek Ethyl sulfate sodium salt (EtS) Standard, 1000µg-mL in methanol, 1mL-ampul (CAS# 546-74-7), ea.