1,10-phenanthrolin-5-ol, 6-chloro-9-methoxy- 6-chloro-9-methoxy-1,10-phenanthrolin-5-ol InChI=1/C13H9ClN2O2/c1-18-9-5-4-7-10(14)13(17)8-3-2-6-15-11(8)12(7)16-9/h2-6,17H,1H