Guanosine overproducing mutant was derived from Bacillus subtilis T1001 by using ultraviolet and diethyl sulfate. The mutant was selected directionally and step wisely on the agar plates containing methionine sulfoxide and 8 azaguanine(8 AG).

以枯草芽孢桿菌T1 0 0 1為出發(fā)菌株一级黄色变态在线视频，經(jīng)紫外線午夜免费看三级片、硫酸二乙酯逐級誘變處理性爱AV大吊一线，選育出腺嘌呤缺陷型菌株欧美美女A片一级，然后經(jīng)蛋氨酸亞砜、8 氮鳥嘌呤( 8 AG)結構類似物平板定向篩選55色色网，獲得鳥苷高產(chǎn)菌株TA2 0 8。

Treatment of the diacetoxy-calix [4] arene with a series of ditosylates in dry MeCN in the presence of NaOH resulted in formation of electron-rich calix [4] areneocrowns, which reacted with 4, 4'-bipyrindinium and p-bis -benzene at room temperature in dry MeCN to afford self-assembling [2] catenanes by π-π stacking interaction.

以杯[4]芳烴為原料怕怕怕在线观看，通過三氟乙酸鉈將其氧化成醌性爱官网在线播放，醌類化合物在Zn粉、冰醋酸免费的黄视频,黄网站。、少量鹽酸和過量的乙酸酐中反應得到雙乙跷匚匚匦园?com；a(chǎn)物，利用氫氧化鈉使其水解日韩免费一级在线观看，然后再與各種對甲苯磺酸二酯進行環(huán)化反應大学生宾馆无码，得到一系列具有富電子空腔的杯[4]芳烴并冠醚。

In this thermodynamic study, the minimum requirements in molar fraction of the solvents (x3) on the azeotropic feed plate are: 0.20 for N,N-dimethylformamide, 0.36 for 2-ethoxyethanol, 0.40 for 1-pentanol and 0.66 for butyl propionate,.

在這個熱力學研究中国产精品亚洲精品爽爽，共沸混合物喂料盤上各溶劑摩爾分數(shù)最小值(x3)分別是：N五月在线视频，N-二甲基甲酰胺：0.20；2-乙氧基乙醇：0.36技女视频网站；1-戊醇：0.40国产区欧美区自拍区在线；丙酸丁酯：0.66。

Several glycosyl phosphate and phosphonates, as inhibitors of AGPase, were synthesized.In the synthesis of β〓-6 linked oligosaccharide phosphonates, A new method was developedfor preparation of 〓,6-〓-di-acetyl-2,3,4-〓-tri-benzyl-D-hexoses by acetylation of benzylatedmethyl glycosides in high yield under the conditions of 〓 and cat.〓.

合成了一些磷酸酯及其類似物作為嗜熱AGPase的抑制劑久久综合给合久久狠狠狠88，在研究β 1-6連接的寡糖膦酸酯的合成中欧美大片a，發(fā)現(xiàn)了制備1，6-〓-二乙跣〉缬癆片；?芐基保護糖的新方法：芐基保護的糖苷在醋酐和催化量的硫酸作用下国产黄片性爱，在0℃反應進行7-10 min，可以選擇性jjizz在线网站、高收率地得到此化合物欧美孕妇变态重口另类。

Application of reverse micella enzyme system in oil industry;2. Synthesis of ethyl oleate catalyzed by Lipex lipase in AOT/isooctane reverse micella r system was studied.

在二-(2-乙基己基)琥珀酸酯磺酸鈉和異辛烷構建的逆膠束體系中，以Lipex脂肪酶為催化劑粉嫩人妻一区，合成了油酸乙酯人人爱人人爽人人射，考察了各影響因素對其產(chǎn)率的影響，并進行了脂肪酶紫外熒光檢測和體系粒度分析黄片免费久久。

This paper presents a description of the brief synthesis of hexanoic acid 2-ethyl ester by new methods and its application. It takes two steps and 4.5 h to complete the synthesis of it.

己酸二乙氨基乙醇酯(DA 6)由美國科學家于20世紀90年代初首先發(fā)現(xiàn)的一種新型植物生長調(diào)節(jié)劑欧美老妇乱人伦人妻TEx，具有高活性性爱操逼片，低毒無污染、可與其它農(nóng)化物質(zhì)兼容的特點色噜噜久久十分无码夜福利，它的合成與應用研究正日益受到人們的重視[1～7]国产成熟老女人啪。