2-Methyl-1,3-butadiene

3,3',4,5-Tetrachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 70362-49-1

4-Methylethcathinone hydrochloride, neat, Solvent-neat, Unit 1mg, # of units-1, Cas.no. 1225617-18-4 (free base)

EPA 528 rev. 1.0 Sample Fortification Solution 3 200µg/mL in methanol; unit: 1x5mL 2060.6 2,4,6-Tribromophenol [118-79-6]