Di-n-butyl sulfide as S

1,3,7-Trichlorodibenzo-p-dioxin,50 µg/mL,n-nonane,1mL,

Sildenafil citrate,1000 µg base/mL,MeOH,1mL

n-Tridecylcyclohexane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 6006-33-3