Theophylline, 100µg/ml in MeOH, 5ml

2-Ethylthiophenol, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 4500-58-7

Thiophene in Toluene Units: 5x1mL ampoule, 1x10mL screw-capped bottle Chiron No. Concentration µgS/g (ppm) Wt.% S-4053-0 Blank 0 S-4053-K 1 000 0.1000 S-4053-2.5K 2 500 0.2500 S-4053-5K

Decachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane