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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Steroids. 2010 Nov 9;76(1-2):193–203. doi: 10.1016/j.steroids.2010.10.009

Figure 2.

Figure 2

Identification of oxidized derivatives of 21(OH)7DHP by mass spectrometry. Sample were purified after UV treatment using RP-HPLC and analyzed with LC-MS. Representative spectrum of potentially oxidized derivative of 21(OH)7DHP is shown on panel B in comparison to starting material (Panel A). The compound 21(OH)piT shows m/z = 401.3. The parental compound (C21H30O3, mass = 330.25) gave m/z = 353.25 and compound 21(OH)oxy-piT could be calculated as C21H30O5, 362.3 [M+K]+ or as C21H30O6, 378.3 [M+Na]+.