Two novel soluble poly, poly [(3-butyrylpyrrole-2, 5-diyl) p-nitrobenzylidene] and poly [(3-butyrylpyrrole-2, 5-diyl)(3-hydroxy-4-methoxy) benzylidene], were synthesized firstly by condensation of 3-butyrylpyrrole with p-nitrobenzaldehyde and vanillin, respectively.

通過3-丁酰基吡咯單體分別與對硝基苯甲醛和香草醛的縮聚反應(yīng)欧美一级情欲视频在线播放不，成功合成了兩種新型可溶性聚吡咯甲烯衍生物－策［（3-丁跖访酪磺谐鍪悠担基吡咯－2欧美欧美一区，5-二）對硝基苯甲烯］和聚［（3-丁趺琅徊俦疲基吡咯－2日韩在线的第一页，5-二）（3-羥基－4-甲氧基）苯甲烯］免费看黄网站9。

The result indicates that those four resuscitation-inducing aromatic herbs mainly contain volatile oil ,and all contain alicyclic compounds; the volatile oil of Borneolum Syntheticum and Styrax both contain Sesquiterpenes of caryophyllene; as resin herbs , Styrax and Benzoinum both contain vanillin, resin ester and balsamic acid .

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Miscellaneous compounds: Examples of this fourth group include vanillin, cinnamic acid,and geranyl formate.

其它化合物：第四類的例子有香草醛、肉桂酸和甲酸香葉酯成年网站免费进入污。

Ninth Five-Year Plan period, the Company conducted a medical intermediates of the pre-development and market research, the introduction of the development of superior strength skin, crotonic acid, crotonic anhydride and other products; also produced 3,3 dimethyl methacrylate, antibiotics raw material products, as well as more than 20 kinds of iso-vanillin and other pharmaceutical intermediates.

九五期間，本公司進行了醫(yī)化中間體的前期開發(fā)和市場調(diào)查人人干人操，引進開發(fā)了優(yōu)力膚把女人弄爽特黄a大片APP、巴豆酸、巴豆酸酐等系列產(chǎn)品乱伦图片视频一区二区三区；還生產(chǎn)了3亚洲中文字幕强，3二甲基丙烯酸甲酯、抗生素原料藥系列產(chǎn)品以及異香蘭素等二十多種醫(yī)藥中間體华人在线观黄色视频。

Was obtained from vanillin by nitration and demethylation.

中間體3 的制備由香蘭素經(jīng)常溫硝化黄色电影手机在线视频、脫甲基制得。

objectiveto determine the content of the tritepenoidic acid in dracocephalum moldavica l .methodswith oleanolic acid as the standard,5% vanillin-acetic acid and perchloric as the developer,colorimetric method was applied.

目的測定香青蘭全草中總?cè)扑岢煞趾抗费侵抟磺凇７椒ㄒ札R墩果酸為指標(biāo)国产小BBWBBWBBWvideos，采用香草醛-冰醋酸及高氯酸顯色后用分光光度法測其含量。

SW-B9 was selected for further study due to its highest vanillin production ability. According to physiological and biochemical characteristics of strain SW-B9 and the 16S rDNA gene sequence analysis, strain SW-B9 was identified as a kind of Bacillus fusiformis.

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Other compounds: such as Vanillin, Phenyl Acrylic acid and Geranyl Formate.

其它化合物：如香草醛、肉桂酸和甲酸香葉酯等国产在线视欧美亚综合。

The guaiacol methods of synthesizing vanillin mainly includes: nitroso group method, Glyoxalic acid method, formaldehyde method, Reimer-Tiemann method, Trichloroacetaldehyde acetochloralb method, electrolytic oxidation method.

愈創(chuàng)木酚法合成香蘭素的方法主要有亞硝基法作爱综合、乙醛酸法、甲醛法国产农村老熟女国产老熟女、Reimer-Tiemann法日本中文在线中文幕、三氯乙醛法、電解氧化法91视频九色，本文綜述了愈創(chuàng)木酚法合成香蘭素的研究進展亚洲中文字幕无码乱线，并對愈創(chuàng)木酚法合成香蘭素提出了展望黄色免费在线网站网址。

As an intermediate for preparing vanillin derived from glyoxylic acid, 3, 4-dihydroxymandelic acid is synthesized based on condensation of catechol and glyoxylic acid in alkaline aqueous solution.

以鄰苯二酚和乙醛酸為原料，在堿性條件下發(fā)生縮合反應(yīng)澳门欧美性爱aⅤ视频，合成了3別揉我的胸,嗯~啊~視頻網站， 4-二羥基扁桃酸，此物質(zhì)是多種香料和藥物合成的重要中間體亚洲先锋色资源在线观看。