described above giving 4 53 grams total yield 8 90 grams 85 the polymers are soluble in water tlc of the first polymer fraction water solution shows no fluorescent spot migration only a stationary fluorescent spot indicating that unreacted scopoletin has been completely washed out of the polymer product during workup the actual content of combined scopoletin in the isolated pvoh product was determined spectrosopically a cary model 14 uv vis spectrophotometer was used the molar extinction coefficient of sveme in 50 ethanol at 345 nm was determined and found to be 9 40 u00d7 10 3 1 cm mo the absorption spectrum of a known weight of polymer production in 50 ethanol was determined and the concentration of scopoletin in the polymer solution found using the molar extinction coefficient of sveme in the equation equ5 10 02 grams of pvoh 96 000 mw 0 498 grams of sveme and 170 cc of dmac were charged to a 200 ml flask and the same procedure as in preparation 1 was followed the product was isolated by pouring the reaction mixture into 1700 cc of acetone with stirring decanting the supernatant several times vacuum filtering and washing with acetone yield after drying was 7 86 g 75 all from the first precipitation the content of sveme in the polymer product was 2 15 u00d7 10 5 moles gram 4 017 grams of pvoh 85 hydrolyzed and molecular weight of 10 000 0 402 grams of 2 methyl 4 nitro 6 3 propionic.