Aim To synthesize methyl 2-(4-methoxyphenyl)-2-oxoacetate from the ascidian Polycarpa aurata.

目的合成從太平洋海鞘 Polycarpa aurata中提取的天然產(chǎn)物2-(4-甲氧基苯基)-2-氧代乙酸甲酯。

In the precence of the base catalyst KF/Al2O3, the one - pot reaction of 2 -hydroxybenzaldehyde or 2 - hydroxynaphthaldehyde with ethyl α- bromoacetate,α-bromoacetophenone , 1,4 - dichloromethylbenzene , 4,4'- dichloromethylbiphenyl and 1,5 -dichloromethylnaphthalene gave the benzofuran compounds in 38-89% yield.

本文報道用 KF/Al_2O_3作為堿催化劑一级A片C视频，由水楊醛或2-羥基-1-萘醛分別和α-溴代乙酸酯、α-溴代苯乙酮、芐基氯国产一级精品婬片、4，4'-二氯甲基聯(lián)苯和1，5-二氯甲基萘等進行一鍋化縮合反應曰韩精品欧美精品，以38～89％的產(chǎn)率合成了14種芳并呋喃化合物欧美性愤潮XXXX。

The bivalent radical CO.Indocin is the trade name of this nonsteroidal anti-inflammatory drug.

氯苯基甲氧基甲基吲哚乙酸是一種非固醇抗炎藥物的商標名稱。

A method used to simutaniously analyze the residues of herbicides (4-chloro-2-methylphenoxy) acetic acid, 2-(4-chloro-2-methylphenoxy) propanoic acid and 4-(4-chloro-2- methylphenoxy) butanoic acid in garlic was developed.

建立了基質(zhì)固相分散－高效液相色譜法同時測定大蒜中2-甲基－4-氯－苯氧乙酸射视频网、2-甲基4-氯－苯氧丙酸在线观看精品黄片、2-甲基－4-氯－苯氧丁酸3種苯氧羧酸類除草劑殘留的方法。

Hexen-1-ol; Hexanal, Hexyl acetate,-Butanoic acid, 2-hexenyl ester, 3-t-Butyl-oct-6-en-1-ol were the characteristic aroma components of sweet cherry fruit.

2-己烯－1-醇人人射人人操人人爽、己醛在线你懂视频、乙酸己酯、-丁酸－2-己烯酯就去吻亚洲精品欧美日韩、3-異丁基－6-烯－1-辛醇是'紅寶石'大櫻桃成熟果實的特征香氣成分好爽好深好紧好高潮。

Hexen-1-ol, Hexanal, Hexyl acetate, Butanoic acid, 2-hexenyl ester,, 3-t-Butyl-oct-6-en-1-ol were the characteristic aroma components of'Brookes'sweet cherry fruit.

2－己烯－1－醇、己醛www.日韩三级在线、乙酸己酯在线观看的毛片网站、-丁酸－2－己烯酯、3-異丁基-6-烯-1-辛醇是不魯克斯甜櫻桃成熟果實的特征香氣成分www干干干操操操。

Compareing with essential oil of the steam distillation method and the bensine solvent extraction method through GC-MS analysis .The result showed that:the essential oil principal constituent extracted by benzine is camphene,a-pinene,bornyl acetate, limonene, 1-methyl-4-(1-methylethyl)-1,4-cyclohexadiene, myrcene, caryophyllene, borneol.

對巴山冷杉針葉水蒸氣蒸餾和石油醚萃取所得精油的GC-MS 分析對比研究結(jié)果表明：石油醚萃取精油主要成分為：莰烯aa视频网站在线，a-蒎烯，乙酸龍腦酯成本人H片动漫网站在线看3D，檸檬烯黄色在线视频平台a，1-甲基-4-異丙基-1，4-環(huán)己二烯插入女人下面视频，月桂烯skyandhome.com，石竹烯，龍腦九一精品视频在线免费。

The experimental results show that the transfer volumes for these amino acids from water to sodium acetate, sodium butyrate, sodium caproate, sodium caprylate and guanidium hydrochloride solution are positive and increase with the increasing concentration of denaturant The standard partial molar transfer volume of zwitterionic end group (NH〓, CO0〓) are larger positive values and the corresponding values of methylene group CH〓 are smaller and negative.

實驗結(jié)果表明狼友视频网址一网址二，氨基酸從水到乙酸鈉、丁酸鈉一级黄片拍拍,免费视频、己酸鈉农村一级强奸少妇大毛片、辛酸鈉和鹽酸胍水溶液的標準轉(zhuǎn)移偏摩爾體積為正值，且隨變性劑濃度的增加而增大性深夜免费福利视频；氨基酸的兩性端基的標準轉(zhuǎn)移偏摩爾體積為較大的正值56色播影院色播性播影院，而CH〓基團標準轉(zhuǎn)移偏摩爾體積為較小的負值。

Water,c12-20 acid peg-8 ester,caprylic/capric triglyceride,proplylene glycol,ppg-15 stearyl ether,chondrus crispus,iris germanica(orris extract/cells),centaurea cyanus,macadamia ternifolia,buxus chinensis,triethanolamine,potassium cetyl phosphate,butyrospermum parkii,c12-13 alkyl lactate,carbomer,phenoxyethanol,methylparaben,imidazolidinyl urea,glyceryl hydroxystearin,tocopheryl acetate.retinyl palmitate,sodium hyaluronate,biosaccharide gum-1,propylparaben,disodium edta,ethylparaben,pentadecalactone,hydroxystearic acid,tetradecyloctadecanoic acid,tetradecyleicosanoic acid,hexadecyleicosanoic acid,butylparaben,isobutylparaben,chlorhexidine digluconate,tocopherol,lecithin,ascorbyl palmitate,glyceryl stearate,glyceryl oleate,BHT,citric acid.

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Aim To study the preparation conditions of the metal chelate gel with chitosan as support.

目的 研究利用殼聚糖為載體、戊二醛為交聯(lián)劑、亞氨基二乙酸為螯合配基制備金屬登合親和吸附劑的條件性26uuuu欧美。