cis-Tramadol HCl

2,4-DB-methyl ester, 100 µg/ml, Ethyl acetate, 5

Naproxen, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 22204-53-1

Aqueous Ethanol Standard (3,0g/l), 10 x 1,2ml