The Sythesis of Xanthene-9-carboxylic Acid Derivatives and Its Mass Spectrometry Behavior
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Abstract
Twenty derivatives of xanthene-9-carboxylic acid have been prepared and allcompounds were confirmed by means of CIMS and EIMS. The CIMS showed peak of M+28 (29) or M (M +1) with large abundance;while EIMS mainly showed peaks of m/e209 and 181,usually with m/e 181 as base peak.
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