The artifact itself was isolated by preparative TLC (Rf = 0.52) and analyzed in ESI-MS positive mode. A major peak was observed at m/z 152.11, a mass-to-charge ratio compatible with the protonated [M+H]+ form of 2-hydroxy-4-methoxybenzaldimine (Fig. 3).
The artifact itself was isolated by preparative TLC (Rf = 0.52)and analyzed in ESI-MS positive mode. A major peak was observedat m/z 152.11, a mass-to-charge ratio compatible with theprotonated [M+H]+ form of 2-hydroxy-4-methoxybenzaldimine(Fig. 3).