Abstract
By using electrospray ionization mass spectrometry, inosine was found to be able to form an octamer stabilized by alkali earth metal cation, namely Ca2+, Sr2+ and Ba2+, of which the most stable is that stabilized by Ca2+ (ion [I8 + Ca]2+). It was established that 9-methylhypoxanthine (M) did not form an analogical octamer, since ion [M8 + Ca]2+ was not detected. On the other hand, 9-methylhypoxanthine can form “mixed” octamers together with inosine (ions [I
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