... stingmasterol [16 ] Ph 13 C-NMR ca Stigmasterol (C-2) V trớ 13 C-NMR(-ppm) cacbon 36 29 71 42 14 0 12 2 37 31 51 10 36 11 24 42 13 40 14 57 15 25 16 30 17 56 18 12 19 19 20 40 21 19 22 13 8 23 12 9 24 50 ... Ph 13 C-NMR ca -sitosterol (C-3) V trớ 13 C-NMR(-ppm) cacbon 37 31 71 42 14 0 12 1 32 32 50 10 36 11 21 12 40 13 42 14 57 15 24 16 28 17 56 18 12 19 19 20 36 21 19 22 34 23 26 24 46 25 29 26 19 ... 50 ,18 10 36,52 11 21, 09 39,70 13 42,22 14 56,88 15 24,38 16 28,92 17 55,97 18 19 ,40 19 12 ,06 20 40,50 21 21, 23 22 13 8, 31 23 12 9,29 24 51, 25 25 31, 91 26 21, 09 27 19 ,00 28 25, 41 29 12 ,25 http://www.lrc-tnu.edu.vn...