4.4.1.15 7.6 - with estimated 6.7 (pKa1) and 8.9 (pKa2) 694780 4.4.1.15 8 - - 664881 4.4.1.15 8 - assay at 694780 4.4.1.15 8.5 9 - 648732, 648733 4.4.1.15 9 - - 746770 4.4.1.15 9 - alpha,beta-elimination 648731 4.4.1.15 9.5 - beta-replacement 648731