2,3',4',6-Tetrabromodiphenyl ether, 1.2ml x 50ug/ml, nonane

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

n-Pentyl 4-hydroxybenzoate-2,3,5,6-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219798-66-9

Levonorgestrel, 100µg/mL in Acetonitrile, 1ml