89.6
[1]. Edith Ju-Hwa Chu, et al. Syntheses of Compounds Related to Vitamin K. III. 4-( -Methyl-4 -hydroxynaphthylazo)-benzenesulfonamide and Related Compounds1,. Journal of the American Chemical Society 1945 67 (5), 811-81.
H0-H15-H19-H5
P61-P64-P70-P71-P80-P0+P5-P04+P40-P05+P51+P8-P0-P6+P64-P40+P-P405-P501