Tri-n-butyl phosphate-d27, 1.2ml x 50ug/ml, toluene

Isocaffeine (1,3,9-Trimethylxanthine), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 519-32-4

(1R,4aR,5aR,8aR,10aR)-1-(4-methylpentyl)-1,6,6,8a,10a-pentamethylperhydrophenanthrene

Surrogate Standard