The optimal separating condition of chromatography analysis was: Shimadzu VP-ODS 150mm4.6mm as chromatographic column; acetonitrile/water (12/88,V/V, Contained 1.25mmol/l phosphoric acid) as mobile phase with flow rate of 1.0ml/min. Macroporous ion exchange resins and activated carbon were applied to enrich the trace level impurities and the main impurities was determined by LC-MS and GC-MS.They were : Benzonitrile , 2-Methyl-8-hydroxyquinoline, 2,6-Pyridinediamine , O-ethyloxime Cyclo-hexanone and compound with 220 molecular weight .

采用離子樹脂和活性炭吸附富集這些微量的雜質(zhì)xxxx.wwww，并通過(guò)液質(zhì)聯(lián)用和氣質(zhì)聯(lián)用對(duì)雜質(zhì)進(jìn)行了定性分析在线看片免费人成视频久网不卡，鑒定了影響290nm吸收的主要雜質(zhì)為苯甲腈，2甲基-8羥基喹啉欧美特级一级黄色视频，2免费人成A片在线视频，6二氨基吡啶，O-乙基環(huán)己酮肟和分子量220的物質(zhì)超碰人人爽爽人人高潮喷水。

The diazotization condition of 4-methyl-1-ethyl-3-cyano-5amino-6-hydroxy-2-pyridone and coupling condition of its diazo salt were researched, and the structure of its diazo salt was confirmed.

研究了4-甲基-1-乙基-3-氰基-5-氨基-6-羥基-2-吡啶酮的重氮化反應(yīng)及其重氮鹽發(fā)生偶合反應(yīng)的條件91色老久久精品偷偷鲁无毒，確定了重氮鹽的結(jié)構(gòu)。

New contributions of this work are as follows:(1). Preparation of Spherical MgCl_2-Supported Late-Transition Metal Catalysts for Ethylene PolymerizationFacile and effective immobilization of late-transition metal catalysts. 2,3-bis-(2,6-diisopropylphenyl) butane diimine nickel dibromide (1) and 2,6-bis-[1-(2,4,6-trimethylphenylimino)ethyl]pyridine iron dichloride (2), for ethylene polymerization has been achieved, using spherical MgCl_2 supports obtained by thermal dealcoholization of MgCl_2·2.56C_2H_5OH, and the effects of dealcoholization temperature on supported late-transition metal catalysts and the properties of resultant polymers were studied, the results indicated that:1.Supports with appropriate mechanical strength, high surface area and high porosity could be prepared by thermal dealcoholization of spherical MgCl_2·2.56C_2H_5OH supports; 2.BET, XRD, IR, SEM, GPC and DSC analyses indicate that the activities of the supported late-transition metal catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature.

本工作的新貢獻(xiàn)如下：(1),,,亚洲视频在线观看、球形氯化鎂負(fù)載后過(guò)渡金屬催化荊催化乙烯聚合本文將配合物2亚洲性夜夜综合久久麻豆，3-雙(2，6-二異丙基苯亞胺)丁烷二溴化鎳(1)和配合物2亚洲精品欧美激情专区，6-二[1-(2未满进入的黄色网站，4，6-三甲基苯亞胺)乙基]吡啶二氯化鐵(2)分別直接負(fù)載于經(jīng)不同熱脫醇溫度處理的球形氯化鎂載體上禁止18以下观看在线网站，研究了氯化鎂載體的脫醇溫度對(duì)負(fù)載化后過(guò)渡金屬催化劑及其聚合物的影響一级作爱视频无遮拦，研究表明：1、通過(guò)對(duì)球形MgCl_2·2.56C_2H_5OH載體進(jìn)行熱脫醇處理城中村按摩一区二区在线观看，可以獲得合適機(jī)械強(qiáng)度欧美A片一级免费黄色视频、較高比表面積和較高孔隙度的球形氯化鎂載體；2xxxx香蕉、BET在线免费看黄，XRD，IR一区二区三区a毛片视频，SEM夜色视频国产欧美一区色欲，GPC和DSC研究表明，脫醇溫度極大地影響負(fù)載后過(guò)渡金屬催化劑的活性和聚合物的性能男人www天堂官网站黄污。

New contributions of this work are as follows:(1). Preparation of Spherical MgCl_2-Supported Late-Transition Metal Catalysts for Ethylene Polymerization Facile and effective immobilization of late-transition metal catalysts. 2,3-bis-(2,6-diisopropylphenyl) butane diimine nickel dibromide (1) and 2,6-bis-[1-(2,4,6-trimethylphenylimino)ethyl]pyridine iron dichloride (2), for ethylene polymerization has been achieved, using spherical MgCl_2 supports obtained by thermal dealcoholization of MgCl_2·2.56C_2H_5OH, and the effects of dealcoholization temperature on supported late-transition metal catalysts and the properties of resultant polymers were studied, the results indicated that: 1.Supports with appropriate mechanical strength, high surface area and high porosity could be prepared by thermal dealcoholization of spherical MgCl_2·2.56C_2H_5OH supports; 2.BET, XRD, IR, SEM, GPC and DSC analyses indicate that the activities of the supported late-transition metal catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature.

本工作的新貢獻(xiàn)如下：(1)亚洲日韩在线中文字幕三区、球形氯化鎂負(fù)載后過(guò)渡金屬催化荊催化乙烯聚合本文將配合物29972国产在线超碰，3-雙(2，6-二異丙基苯亞胺)丁烷二溴化鎳(1)和配合物2欧美黄色免费网站视频，6-二[1-(2国产在线视频。，4，6-三甲基苯亞胺)乙基]吡啶二氯化鐵(2)分別直接負(fù)載于經(jīng)不同熱脫醇溫度處理的球形氯化鎂載體上欧美动日韩中文，研究了氯化鎂載體的脫醇溫度對(duì)負(fù)載化后過(guò)渡金屬催化劑及其聚合物的影響男女综合网，研究表明： 1、通過(guò)對(duì)球形MgCl_2·2.56C_2H_5OH載體進(jìn)行熱脫醇處理欧美一级网址，可以獲得合適機(jī)械強(qiáng)度最刺激的性毛片免费视频、較高比表面積和較高孔隙度的球形氯化鎂載體； 2玖玖爱网、BET色哟哟自拍一区二区，XRD，IR亚洲色无码一级毛片一区二区看，SEM国产福利影院在线观看，GPC和DSC研究表明，脫醇溫度極大地影響負(fù)載后過(guò)渡金屬催化劑的活性和聚合物的性能人人爱操屄。

Ethyl-4-phenyl-5-(2-pyridyl)-1,2,4-triazole was synthesized by several-step reactions fromα-picoline, and was confirmed by IR私人18禁午夜福利网站、1H-NMR and MS spectra. Part II.

以α-甲基吡啶為原料，經(jīng)多步反應(yīng)合成了3-乙基-4-苯基-5-(2-吡啶基)-1日韩无码一级黄色毛片，2久久园产黄色大片视频，4-三唑，并用紅外光譜五月天,COm、1H-NMR譜及質(zhì)譜對(duì)產(chǎn)物進(jìn)行了確證国产500部自拍视频在线播放。

The details of this route as follows:With the piperidine as catalyst, p-hydroxylbenzaldehyde condensed with thiazolidine-...

同時(shí)，本文還對(duì)反應(yīng)過(guò)程中產(chǎn)生的5-乙基-2-乙烯基毗啶AV网站在线1、5-乙基-2-羥乙基吡啶91囯内自拍、5-[(4-羥基苯基)甲基]-2，4-噻唑烷二酮国产区一区在线、5-4-

This invention is directed to the-tartaric acid salt of 2-amino-N-{1-(2,4-difluoro-benzyloxymethyl)-2-oxo-2-3-oxo-3a-pyridin-2-ylmethyl-2-(2,2,2-trifluoroethyl-2,3,3a, 4,6,7-hexahydro-pyrazolo(4,3-c) pyridin-5-yl-ethyl}-2-methyl-propionamide which is a growth hormone secretagogue and as such is useful for increasing the level of endogenous growth hormone.

本發(fā)明涉及2－氨基－N－{1－－(2久久精品免费精品，4－二氟－卞氧甲基)－2－氧代－2－3－氧代－3a－(R－吡啶－2－基甲基－2－(2，2免费A级毛片群久久免费，2－三氟－乙基)－2女人被做到高潮连连免费视频，3，3a一级国产精品久久久久无码AV，4欧美性日，6，7－六氫化－吡唑子基(4，3－c)吡啶－5－基－乙基}－2－甲基－丙酰胺的－－酒石酸鹽午夜福利97，它是一種生長(zhǎng)激素促分泌素日韩在线精品福利网页视频观看免费，并且可用于提高內(nèi)源性生長(zhǎng)激素水平。

A three-level energy model is forwarded on the nonlinear absorption properties o f a two-photon absorption dye trans-4-[4′-(N- hydroxyethyl- N-eth ylamino)styryl]-N-methylpyridinium p-toluene sulfonate.

提出了有機(jī)染料反式 4 [4′(N 羥乙基 N 乙基胺基)苯乙烯基 ] N 甲基吡啶對(duì)甲苯磺酸鹽非線性吸收的三態(tài)模型欧美日韩啊啊啊爽性爱激情。

A compound of formula wherein R1 is hydrogen, halo or methoxy; R2 is hydrogen, halo, methyl, ethyl or methoxy; R3 is carboxy, tetrazolyl, or -CONHSO2R where R is methyl, ethyl, phenyl, 2,5-dimethylisoxazolyl or trifluoromethyl; T is -CH2- or -SO2-; and ring A is 3-chlorophenyl, 4-chlorophenyl, 3-trifluoromethylphenyl, 3,4-dichlorophenyl, 3,4-difluorophenyl, 3-fluoro-4-chlorophenyl, 3-chloro-4-fluorophenyl or 2,3-dichloropyrid-5-yl; or a pharmaceutically acceptable salt or prodrug thereof, as well as pharmaceutical compositions containing them are described and claimed.

本發(fā)明涉及一種式化合物女老师高潮喷水，其中R 1 是氫原子、鹵素或甲氧基十八禁欧美在线观看视频；R 2 是氫原子AAAAAAA一级婬片毛片、鹵素、甲基有色永久无码视频在线观看、乙基或甲氧基中文字幕无码一区在线视频青青；R 3 是羧基、四唑基或－CONHSO 2 R 4 免费无码十八禁污污网站，其中R 4 是甲基、乙基看欧美黄片视频、苯基午夜成年男人免费网、2，5－二甲基異∴唑基或三氟甲基91avzaixian；T是－CH 2 －或－SO 2 －一级AAAAA大黄片；環(huán)A是3－氯苯基、4－氯苯基爱情岛论坛亚洲自拍、3－三氟甲基苯基黄片久久久动漫、3，4－二氯苯基97大学生情侣酒店自拍亚洲精品、3国产一级A片XXXXx，4－二氟苯基、3－氟－4－氯苯基国产麻豆区精品系列在线、3－氯－4－氟苯基或2欧美日韩视频在线播放，3－二氯吡啶－5－基；或其藥用允許的鹽或前藥亚洲狠狠草视频，還包括所闡述和要求權(quán)利的含有它們的藥用組合物国产综合色一区二区三区。

But on the industry, many with the alkyl bandaging, such as bandaging , ergadebidi...

但是在工業(yè)上，多以烷基吡啶99re视频在线这里，如3-甲基吡啶欧美久久久抽搐视频、2-甲基-5-乙基吡啶以及喹啉等為原料制備煙酸。