different
Figure 5: Stability of 2-AG in 3 different mobile phases: A. solid square (■), 50 mM ammonium formate and 0.1% formic acid in acetonitrile – water (7:3), pH 5.4; B. open square (□), 50 mM ammonium formate in acetonitrile, pH 7.0; C. open triangle (Δ), 0.1% formic acid in acetonitrile – water (7:3), pH 3.5.