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. Author manuscript; available in PMC: 2012 Jun 19.
Published in final edited form as: Curr Cancer Drug Targets. 2009 Aug 1;9(5):595–607. doi: 10.2174/156800909789056962

Fig. (6). Formation of Fe-KP772 by coincubation of KP772 with Fe(II)SO4.

Fig. (6)

(A) Photographs of aqueous solutions of (1) 1 mM KP772, (2) 1 mM FeSO4, (3) 1 mM Ferroin, (4) 0.5 mM Ferroin, (5) 0.25 mM Ferroin, (6) 0.5 mM KP772 mixed with 0.5 mM Fe(II)SO4 or (7) 0.25 mM KP772 with 0.25 mM Fe(II)SO4 were taken immediately after preparation at room temperature. (B) UV-Vis spectra (200-600 nm) of the indicated aqueous solutions were measured immediately after preparation. (C) KB-3-1 cells were exposed to the indicated KP772 concentrations alone, Fe-KP772, or a 1:1 mixture with FeSO4 (mixed in H2O). Values given are means ± standard deviation of 3 experiments performed in triplicates.