Analysis of Acetyl Salicylic Acid


Column LiChroCART® 250-4 LiChrospher® 100 RP-18, 5 μm
Pharmaceutical analysis: Acetyl salicylic acid
Mobile phase

0.01 mol/L sodium dihydrogen phosphate buffer, pH 2.0 with phosphoric acid/Acetonitrile/Methanol
70/25/5 (v/v/v)
Flow rate 1.0 mL/min
Detection UV 237 nm
Temperature room temperature
Injection volume 100 μL
Sample

1. Acetylsalicylic acid
2. Salicylic acid
3. p-Hydroxybenzoic acid