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clearfix"><div id="7b8umoq" class="twoCol"><div id="osum39w" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/second-_yyby/">醫(yī)藥健康</a>?<a href="http://www.cdcfah.com/cp/third-yyby_zyfl/">制藥輔料</a>?高純度泛解酸內(nèi)酯服務(wù)商上海臨辰供應(yīng)</p><div id="pyax4jo" class="leftbox clearfix"><h1>高純度泛解酸內(nèi)酯服務(wù)商上海臨辰供應(yīng)</h1><div id="lph7wce" class="proBig"><div id="qpryieg" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shlinchen/637278336133632812/8293857.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lkmeoa7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shlinchen/637278336133632812/8293857.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8ice3uw" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>高純度泛解酸內(nèi)酯服務(wù)商,泛解酸內(nèi)酯</p><p><span>***更新：</span>2020-06-30 03:20:55</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ed8s7fm" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海臨辰醫(yī)藥科技有限公司</a></p><p><span>聯(lián)系人：</span>葉海岑</p><p><span>郵箱: </span>info@linchenpharm.com</p><p><span>電話: </span>13761181955</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>021-31606595</p><p><span>地址: </span>辰花路5088弄221號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="leykeax" class="page-proshow02"><p class="title">詳細說明</p><div id="7kro32a" class="box"><p><p> (S)-(+)-泛解酸內(nèi)酯（L-Pantolactone），高純度泛解酸內(nèi)酯服務(wù)商，高純度泛解酸內(nèi)酯服務(wù)商，分子式為C6H10O3。 </p> <p> 中文名稱 </p> <p> (S)-(+)-泛解酸內(nèi)酯英文名稱 </p> <p> L-Pantolactone中文別名 </p> <p> L-(+)-泛解酸內(nèi)酯;S-泛解酸內(nèi)酯;英文別名 </p> <p> (3S)-3-hydroxy-4,4-dimethyloxolan-2-one;(S)-3-Hydroxy-4,4-dimethyldihydrofuran-2(3H)-one;L-(+)-Pantolactone;CAS號 </p> <p> 5405-40-3 分子式 </p> <p> C6H10O3分子量 </p> <p> 130.14200精確質(zhì)量 </p> <p> 130.06300PSA </p> <p> 46.53000LogP </p> <p> -0.06970 </p> <p> <p> 物化性質(zhì)折射率：1，高純度泛解酸內(nèi)酯服務(wù)商.469 </p> <p> 閃點：99oC </p> <p> 熔點：90-94oC </p> <p> 密度：1.165g/cm3 </p> <p> 沸點：120-122oC/15mmHg(lit.)。 </p> 泛解酸內(nèi)酯加工后生成 D-泛解酸內(nèi)酯（左酯）。高純度泛解酸內(nèi)酯服務(wù)商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高純度泛解酸內(nèi)酯服務(wù)商,泛解酸內(nèi)酯" src="https://tyunfile.71360.com/WaterMark/UploadFile/shlinchen/637278336133632812/8293857.png"></div><p> D-泛解酸內(nèi)酯水解酶基因,基因片段長度為1146bp,該序列同來源于尖鐮孢霉菌(F.oxysporum)AKU 3702菌株的編碼D-泛解酸內(nèi)酯水解酶cDNA結(jié)構(gòu)基因的同源性為90.06%.將所得片段定向克隆到pTrc99a載體中,轉(zhuǎn)化至JM109感受態(tài)細胞,篩選出了陽性克隆.經(jīng)IPTG誘導(dǎo)陽性菌,進行SDS-PAGE電泳,檢測出在約40kD處有一蛋白表達帶.對兩株重組基因工程菌的比活力進行測定,結(jié)果分別為37U和41U. </p> <p> <br /> </p> <p> 串珠鐮孢霉菌(Fusarium moniliforme)CGMCC 0536的D-泛解酸內(nèi)酯水解酶具有高度的立體選擇性,可立體專一性拆分DL-泛解酸內(nèi)酯,生成D-泛解酸. 98以上泛解酸內(nèi)酯高性價比的選擇中文別名:(3R)-二氫-3-羥基-4,4-二甲基-2(3H)-呋喃酮。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高純度泛解酸內(nèi)酯服務(wù)商,泛解酸內(nèi)酯" src="https://tyunfile.71360.com/WaterMark/UploadFile/shlinchen/637278336263828125/6823745.png"></div><p style="text-indent:25px">“微生物酶法拆分制備D－泛解酸內(nèi)酯及用于生產(chǎn)D-泛酸鈣與D-泛醇”項目選育了一株能高產(chǎn)立體專一性D-泛解酸內(nèi)酯水解酶、不利用不降解泛解酸內(nèi)酯或泛解酸的微生物菌株串珠鐮孢霉，建立了國際**的霉菌交聯(lián)原位固定化方法，酶轉(zhuǎn)化時間短到3～5小時，效率高，反復(fù)分批酶轉(zhuǎn)化可達180次以上，所得到的酶水解產(chǎn)物光學(xué)純度達到99％e．e．以上，因此具有較好的技術(shù)經(jīng)濟競爭力。該項目采用的D-泛酸鈣生產(chǎn)能力微生物酶催化拆分方法，與傳統(tǒng)化學(xué)拆分方法相比，以生產(chǎn)D-泛醇為例，原材料消耗減少69．2％，廢液、廢渣排放分別減少65．5％、43．8％，能耗減少12．7％，生產(chǎn)成本降低了26．5％，同時，生物法改善了操作環(huán)境，提高了產(chǎn)品品質(zhì)與產(chǎn)品安全性，提高了D-泛酸生產(chǎn)的整體技術(shù)水平，達到了用高新生物技術(shù)改造傳統(tǒng)化學(xué)工業(yè)的目的。</p><p style="text-indent:25px">一種ＤＬ－泛酰內(nèi)酯的拆分方法?，F(xiàn)有拆分方法中使用的拆分劑在拆分ＤＬ－泛酰內(nèi)酯時的選擇性低，使ＤＬ－泛酰內(nèi)酯的總利用率低，提高了拆分ＤＬ－泛酰內(nèi)酯的生產(chǎn)成本。本發(fā)明所用的拆分劑為有機堿Ｒ－ＮＨ＃－［２］，其中Ｒ為Ｃ＃－［１５］Ｈ＃－［１５］，包括以下步驟：ａ）用純化后的拆分劑與酸反應(yīng)，加水、加熱溶解，滴加ＤＬ－泛酰內(nèi)酯水解液，拆分劑：ＤＬ－泛酰內(nèi)酯的摩爾比＝０．５－０．７∶１；ｂ）抽濾由ａ得到的反應(yīng)液，濾餅進行消旋、回收拆分劑處理，濾液加入有機溶劑進行共沸脫水，蒸去過量有機溶劑進行結(jié)晶。本發(fā)明明顯提高了拆分劑對Ｄ－泛酰內(nèi)酯的選擇性，提高ＤＬ－泛酰內(nèi)酯的總利用率，拆分收率高，減少拆分劑的用量且容易重復(fù)回收利用，降低拆分ＤＬ－泛酰內(nèi)酯的生產(chǎn)成本。中文別名:D-泛解酸內(nèi)酯。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高純度泛解酸內(nèi)酯服務(wù)商,泛解酸內(nèi)酯" src="https://tyunfile.71360.com/WaterMark/UploadFile/shlinchen/637278339844755859/788254.png"></div><p> D-泛酸鈣的制備方法主要有兩種：1)先化學(xué)合成DL-泛酸鈣，通過拆分DL-泛酸鈣而制得D-泛酸鈣。2)通過化學(xué)法或生物法拆分關(guān)鍵中間體DL-泛解酸內(nèi)酯得到D-泛解酸內(nèi)酯，再由D-泛解酸內(nèi)酯與β--氨基丙酸反應(yīng)合成D-泛酸鈣，其中生物法拆分的成本比化學(xué)法拆分的成本低15%。 </p> <p> 國外D-泛酸鈣生產(chǎn)公司主要有日本制藥精細化學(xué)品公司、德國BASF公司、荷蘭DSM公司等。BASF、DSM均采用化學(xué)法生產(chǎn)，而日本***制藥采用生物法酶拆分工藝制備中間體D-泛解酸內(nèi)酯，這也是目前**技術(shù)的工藝。國內(nèi)原只有鑫富藥業(yè)一家有生物法酶拆分工藝，但現(xiàn)在山東新發(fā)也采用了這一工藝。 </p> <p> <br /> 中文別名:D-(-)-Pantolactone D-(-)-泛酰內(nèi)酯。大量供應(yīng)泛解酸內(nèi)酯規(guī)格型號</p><p style="text-indent:25px">將所述泛解酸制備得到泛解酸內(nèi)酯。高純度泛解酸內(nèi)酯服務(wù)商</p><p style="text-indent:25px">其中Kataoka M 等發(fā)現(xiàn)來源于根*農(nóng)桿菌的L-泛解酸內(nèi)酯水解酶有較高的活力和選擇性。Kesseler M 等對根*農(nóng)桿菌lu678 的L-泛解酸內(nèi)酯水解酶構(gòu)建大腸工程菌并過量表達該蛋白，酶活提高了200 倍，達到600 U/g。該過程要求L-泛解酸內(nèi)酯必須完全水解，才能獲得高光學(xué)純度的D-泛解酸內(nèi)酯，限制了其工業(yè)應(yīng)用。D-泛解酸內(nèi)酯水解酶選擇性水解拆分DL-泛解酸內(nèi)酯生成D-泛解酸，再經(jīng)內(nèi)酯化生成D-泛解酸內(nèi)酯，留下的L-泛解酸內(nèi)酯經(jīng)化學(xué)消旋化為DL-泛解酸內(nèi)酯重新循環(huán)拆分。D-泛解酸內(nèi)酯水解酶來源豐富，其中**常用的是鐮飽霉菌，有尖孢鐮刀菌、腐皮鐮刀菌和串珠鐮刀菌。2007 年，SAKAMOTO K等利用固定化的尖孢鐮刀菌來水解拆分DL-泛解酸內(nèi)酯，固定化細胞的半衰期可以達到6 000h，經(jīng)過180次重復(fù)利用后仍然保持原活力的71%，相對于游離的整細胞催化其半衰期提高了35 倍。高純度泛解酸內(nèi)酯服務(wù)商</p><p style="text-indent:25px">上海臨辰醫(yī)藥科技有限公司創(chuàng)建于2016-04-05，注冊資金 100-200萬元，辦公設(shè)施齊全，辦公環(huán)境優(yōu)越，已***實行網(wǎng)絡(luò)化辦公，**提高了速度和效率。Domanchem,多曼,NEXIRA,Ashland,BASF,Evonik,ROQUETTE,DFE,JBCOCO,JRS,BENOE,GIFU,StrahlPitsch,CYCLOLAB,SDFine,Avantor,Sudeep,Ambuja,Animo,kyowa-chem,caps-roxlor,MSI,CABOT,Danisco,DoPant,Sasol,Seppic,Clariant,Solvay,EASTMAN,DSM,Pfanstiehl,ANGUS,Cargill,Hopax,IMERYS,KEONOS,KIMICA,LYSI,MERCK,SABINSA,Vertellus,Watson是上海臨辰醫(yī)藥科技有限公司的主營品牌，是專業(yè)的Plasdone?聚維酮(PVP)，Polyplasdone?交聯(lián)聚維酮(PVPP)，Plasdone?共聚維酮（PVP/VA)，Benecel?羥丙甲纖維素(HPMC)，Klucel?羥丙纖維素(HPC) 硬脂富馬酸鈉，羧甲基淀粉鈉，交聯(lián)羧甲基纖維素鈉，微晶纖維素，磷酸氫鈣（無水/二水）USP-NF,Ph.Eur,JP" D-(+)-半乳糖（植物）蔗糖，異麥芽糖，異麥芽酮糖醇，三氯蔗糖，環(huán)氨酸鈉（甜蜜素)，赤蘚糖醇丁香酚，丁香油，蓖麻油，芝麻油，橄欖油，中鏈甘油三酸酯，乙酰單酸甘油乙酯，蔗糖脂肪酸酯聚乙二醇3350/1000/4000/6000/8000，白陶土，液體石蠟，輕質(zhì)液體石蠟，（干燥）氫氧化鋁凝膠，薄荷腦，合成鋁碳酸鎂，合成硅酸鋁，氧化鎂，氫氧化鎂，甘羥鋁，甘氨酸鋁，磷酸鈣（二水/無水），三硅酸鎂，滑石粉，BHA,BHT,多庫酯鈉，組氨酸，鹽酸組氨酸，精氨酸，鹽酸精氨酸，絲氨酸，半胱氨酸，丙氨酸， Pfanstiehl海藻糖（二水），蔗糖（甘蔗/甜菜），甘露醇，精氨酸，琥珀酸二鈉（無水），氨丁三醇 (含低內(nèi)*素），活性炭（供注射）色素系列黃/紅氧化鐵，檸檬黃色淀，公司，擁有自己**的技術(shù)體系。公司堅持以客戶為中心、Plasdone?聚維酮(PVP)，Polyplasdone?交聯(lián)聚維酮(PVPP)，Plasdone?共聚維酮（PVP/VA)，Benecel?羥丙甲纖維素(HPMC)，Klucel?羥丙纖維素(HPC) 硬脂富馬酸鈉，羧甲基淀粉鈉，交聯(lián)羧甲基纖維素鈉，微晶纖維素，磷酸氫鈣（無水/二水）USP-NF,Ph.Eur,JP" D-(+)-半乳糖（植物）蔗糖，異麥芽糖，異麥芽酮糖醇，三氯蔗糖，環(huán)氨酸鈉（甜蜜素)，赤蘚糖醇丁香酚，丁香油，蓖麻油，芝麻油，橄欖油，中鏈甘油三酸酯，乙酰單酸甘油乙酯，蔗糖脂肪酸酯聚乙二醇3350/1000/4000/6000/8000，白陶土，液體石蠟，輕質(zhì)液體石蠟，（干燥）氫氧化鋁凝膠，薄荷腦，合成鋁碳酸鎂，合成硅酸鋁，氧化鎂，氫氧化鎂，甘羥鋁，甘氨酸鋁，磷酸鈣（二水/無水），三硅酸鎂，滑石粉，BHA,BHT,多庫酯鈉，組氨酸，鹽酸組氨酸，精氨酸，鹽酸精氨酸，絲氨酸，半胱氨酸，丙氨酸， Pfanstiehl海藻糖（二水），蔗糖（甘蔗/甜菜），甘露醇，精氨酸，琥珀酸二鈉（無水），氨丁三醇 (含低內(nèi)*素），活性炭（供注射）色素系列黃/紅氧化鐵，檸檬黃色淀，市場為導(dǎo)向，重信譽，保質(zhì)量，想客戶之所想，急用戶之所急，全力以赴滿足客戶的一切需要。自公司成立以來，一直秉承“以質(zhì)量求生存，以信譽求發(fā)展”的經(jīng)營理念，始終堅持以客戶的需求和滿意為**，為客戶提供質(zhì)量的[ "泛解酸內(nèi)酯", "有機可可粉有機果粉", "阿拉伯膠瓜爾膠 ", "BIS TRIS " ]，從而使公司不斷發(fā)展壯大。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/442582.html</p></div></div></div></div></div><div id="ox7tv2q" class="page-right twoColRt"><div id="xbvcmi8" class="box01 margin10 clearfix"><h3><a 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