pH 4.01 buffer solution (box of 25x20mL sachet)

Naltrexone (base, anhydrous), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 16590-41-3

Salicylic acid (2-Hydroxybenzoic acid), neat, Solvent-neat, Unit 500mg, # of units-1, Cas.no. 69-72-7

Fluoxetine-HCl, 100µg/ml in Acetonitrile, 5ml