Gem bids for Sigma, Iodotrimethylsilane, N Methyl N Trimethylsilyltrifluoroacetamide, Amberlite Xad2 Resin Sigma, Dithioerythritol Sigma, Solid Glass Beads Sigma 3Mm, Amberlit Xad16n Polymeric Adsorbent, Cyclohexane, Cholesterol Esterase, Supel Co Ascentis Phenyl Column, Ascentis Phenyl Guard Cartridge, Alfa Dihydrotestosterone, 16 Androstenol, Ethyl Beeta D Glucuronide