The TLC of them were concordance.They presented the same color fluorescence in the corresponding position at the ultraviolet light(365nm). After the vanillic aldehyde sulphuric acid ethanol solution developed, violet color spots presented at the same place. Reference substance of Polysaccharide presented violet color ,but in the corresponding position the crude and the prepared didn't show the spots . It proves that the chemical constituents of Polygala Root may not have changed after stir-baked with honey.

生遠(yuǎn)志正丁醇部位色譜和蜜遠(yuǎn)志正丁醇部位色譜基本一致：紫外燈（365 nm）下二者在相應(yīng)位置呈相同顏色熒光日韩久久精品麻豆出品AV，香草醛硫酸乙醇溶液顯色后二者在相應(yīng)位置的幾個(gè)斑點(diǎn)均呈紫羅蘭色外国免费黄色网站，且遠(yuǎn)志皂苷元對(duì)照品斑點(diǎn)呈紫羅蘭色，而在與其相應(yīng)位置生遠(yuǎn)志供試品和蜜遠(yuǎn)志供試品均未檢視到相應(yīng)斑點(diǎn)美女让我捅。

A new process for the preparation of 5-bromo-vanillin with vanillic aldehyde as raw material,AlBr3 as activator,HBr and H2O2 as brominating agent and anhydrous alcohol as solvent was developed in this paper.

摘 要：以甲基香蘭素為原料人人操天天射人人人玩，氫溴酸與過(guò)氧化氫為溴化劑，溴化鋁為催化劑国产一级毛片无码aaaaaa，無(wú)水乙醇為溶劑制備5-溴香蘭素在线免费观看黄色一级视频。

The costuslactone and dehydrocostuslactone in the supercritical CO 2 extract of aucklandia were identified by TLC using a mobile phase of petroleum ether,ethyl acetate and benzene (70∶5∶15) and the colour developing reagent of 5% vanillic aldehyde dissovled in sulfuric acid.

用薄層色譜法，以ψ(石油醚∶乙酸乙酯∶苯)=70∶5∶1 5為展開(kāi)劑人人操操操干干，質(zhì)量分?jǐn)?shù)為 5 %香草醛硫酸為顯色劑對(duì)木香超臨界萃取物中的木香烴內(nèi)酯與去氫木香內(nèi)酯進(jìn)行鑒別公侵犯人妻中文字幕在线视频；并建立高效液相色譜法同時(shí)測(cè)定木香烴內(nèi)酯與去氫木香內(nèi)酯的含量方法。

vanillin; vanillic aldehyde：香草醛;香草精

香草醛乙醚;4-乙氧-3-甲氧苯甲醛 vanillin ethyl ether; 4-ethoxy-3-methoxy-benzaldehyde | 香草醛;香草精 vanillin; vanillic aldehyde | 香草醇 vanillyl alcohol