Their structures were confirmed by elemental analysis, 1H NMR, and IR spectral data. The preliminary bioassay results showed that α-phenyl-sul-fonylcyclododecanone oxime 2,4-dichlorophenoxy acetate (8p) had inhibition ratio 100% and 80.07% against Digitaria sanguinalis Scop., and 100% and 88.70% against Abutilon theophrasti Medic. at concentrations of 100 and 1 mg/L.

初步生物活性測定結(jié)果顯示日韩一级视频免费播放，部分化合物具有一定的除草活性日韩清纯无码自拍视频网站，如α-苯磺跻患禷片欧美在线视频；h(huán)十二酮肟-2，4-二氯苯氧乙酸酯(8p)在濃度為100和1 mg/L時對馬唐的抑制率分別為100%和80.07%殴美特级黄片；對苘麻的抑制率分別為100%和88.70%91福利视频导航一区二区。

Objective To investigate the effect of thioglycolic acid on oocyte maturation process in vitro in mice and Xenopus.

目的 探索巰基乙酸對非洲蟾蜍和小鼠卵母細(xì)胞體外成熟的影響。

We found that when acetone was used as solvent, in the presence of TFA, cis-4-pyrrodin-1-yl-L-proline could catalyze the direct asymmetric aldol reaction between acetone and 4-nitrobenzaldehyde with 84% ee.

研究發(fā)現(xiàn)欧美性爱精品影库，該催化劑以丙酮為溶劑時男人禁黄色视频，加入催化劑等當(dāng)量的三氟乙酸可以較好的催化丙酮與對硝基苯甲醛之間的直接不對稱Aldol反應(yīng)，得到84%的ee值中文字幕黄片。

In this study, we carried out the allylation of anilines with allylic acetates in PEG-H2O system in the presence of palladium as catalyst. N-allylation of anilines was achieved.

在本研究中免费最婬荡的毛片18以下禁止，我們完成利用鈀催化劑，在水及聚乙二醇系統(tǒng)中日日夜夜国产一区，使苯胺類和乙酸烯丙酯類進(jìn)行烯丙基化反應(yīng)欧美性爱一级免费看，并探討各苯胺類反應(yīng)物之結(jié)果。

Methoxycarbonyl-4-(4-methoxyphenyl )-6-methyl-3, 4-dihydropyrimidine-2(1H)-one was synthesized from anisaldehyde, methyl acetoactate and urea in presence of HF-1O1 strong acidic ion-exchange membrane.

在HF-101強酸性離子交換膜的存在下久久精久久精久久精99，由對羥基苯甲醛一级精品一区视频在线观看、乙酰乙酸甲酯與脲一步合成了5－甲氧羰基－4－（4－甲氧苯基）－6－甲基－3，4－二氫嘧啶－2(1H)－酮人人大香草av淘宝av线路一。

The annulation of stilbene compounds were studied. Phenanthrene derivates-interme diates of tylophorine were synthesized by annulation from-2,3-bis(3,4-dimethoxyphen yl)acrylic acid and-2,3-bis(3,4-dimethoxyphenyl) acrylonitrile with phenyliodine diace tate as a friendly and high efficient catalyzer.The route was first reported, whose application foreground would be promising.The catalyzer will be used to study of synthesi- zing a series of new phenanthrenes.

本文還探索了簡單類化合物關(guān)環(huán)反應(yīng)视频久久这里，并研究出用廉價高效對環(huán)境友好的催化劑-二乙酸碘苯成功地將類化合物－3，4-二甲氧基-α-(3亚洲免费一区在线，4-二甲氧苯基)-肉桂酸和-2-(32020av天堂在线，4-二甲氧苯基)-3-(3，4-二甲氧苯基)-丙烯關(guān)環(huán)形成相應(yīng)的菲環(huán)衍生物－娃兒藤堿重要中間體99r热久久，此方法在國內(nèi)尚屬首次一本大道香蕉欧美精品69，具有重要的應(yīng)用價值，此外可用此催化劑研究一系列類化合物的關(guān)環(huán)反應(yīng)欧美人与动牲性行为视频。

This is a special reaction of arginine's carbamidine, which is useful in quantitating and determining the natures of protein and the amino acid.

這是由于蛋白質(zhì)分子中精氨酸胍基的特征反應(yīng)精品日韩大片观看视频在线观看。許多胍的衍生物如胍乙酸、胍基丁胺等也發(fā)生此反應(yīng)国产一级作爱A片免费视频。

The results showed that Kaidimycin was chemically neutral, macrocylic polylactones, stable and liable to dissolve into water and pyridine, slight to dissolve into methanol, ethanol and N-butanol, difficult to dissolve into ethyl acetate, acetone, benzene and chloroform. Chemical reaction of functional group of Kaidimycin showed that it had glycoside, amino acid and aldehyde, no reducing sugar, polypeptide and phenol.

凱地菌素屬中等極性的久久人人摸人人搞、中性抗生素，極性紙層析結(jié)果與多烯類抗生素的紙層析結(jié)果相似：易溶于水日韩国产一区、吡啶97欧美激情超碰一区二区，微溶于甲醇、乙醇色图五月天、正丁醇无码国产乱人伦偷精品视频，不溶于乙酸乙酯、丙酮、苯毛片手机在线、三氯化碳国产精品秒播无毒不卡；對高溫、光照和紫外處理有很好的穩(wěn)定性十八岁禁看的黄色网站；官能團反應(yīng)試驗結(jié)果發(fā)現(xiàn)五级的在线观看黄色网站，凱地菌素可能含有糖苷鍵、氨基酸伯氨基和醛基亚洲国产三级AV，不含有還原糖、多肽和酚基欧美性爱人人网，高錳酸鉀自拍偷拍第二十页、濃硫酸反應(yīng)與多烯大環(huán)內(nèi)酯類抗生素的特性相似；并且依據(jù)純品AV一本大道香蕉大在线不卡，采用生物法和分光光度法對搖床發(fā)酵液進(jìn)行了效價的測定中国熟妇精品社区。

Producing Creatin monohydrate, Ctreatine anhydrous, Taurine, Tri-Craetine citrate, Tricreatine Malate, Creatine Ethyl ester Glycocyamine, Guanidino propionic acid, etc.

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Two haptens of mono-p-nitrophenyl phosphonates were designed and synthesized according to the structural features of the substrate and its hydrolytic transition state. The phosphonate haptens were coupled to the carrier proteins bovine serum albumin and keyhole limpet hemocyanin .

以對硝基乙酸苯酯水解反應(yīng)中間體的結(jié)構(gòu)信息進(jìn)行分子設(shè)計精品在线视频三级片，經(jīng)過Arbzov等五步化學(xué)反應(yīng)合成了二種對硝基苯基類膦酸酯半抗原，將其與載體蛋白（牛血清白蛋白BSA和鑰孔〓血蘭素KLH）偶聯(lián)浮力黄毛片一级播放，制得了具不同抗原價（10～60）的半人工合成全抗原免费一级无码婬片AA片A片。