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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>?DL泛解酸內(nèi)酯商家上海臨辰供應(yīng)</p><div id="raw2s8e" class="leftbox clearfix"><h1>DL泛解酸內(nèi)酯商家上海臨辰供應(yīng)</h1><div id="g3nf7y2" class="proBig"><div id="wypyrso" 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="xa874kd" 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="2vepgrn" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>DL泛解酸內(nèi)酯商家</p><p><span>***更新：</span>2020-06-23 15:27:29</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="cqr3zin" 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(jī): </span>021-31606595</p><p><span>地址: </span>辰花路5088弄221號</p><p>[當(dāng)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="j7wdpqc" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wwcypqh" class="box"><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(shí)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(jī)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，DL泛解酸內(nèi)酯商家，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，DL泛解酸內(nèi)酯商家，濾餅進(jìn)行消旋、回收拆分劑處理，濾液加入有機(jī)溶劑進(jìn)行共沸脫水，蒸去過量有機(jī)溶劑進(jìn)行結(jié)晶，DL泛解酸內(nèi)酯商家。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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="DL泛解酸內(nèi)酯商家" src="https://tyunfile.71360.com/WaterMark/UploadFile/shlinchen/637278336133632812/8293857.png"></div><p style="text-indent:25px">維生素B5（VitaminB5）又稱D-維生素B5，是人體必需的13種維生素之一，是一種水溶性維生素，維生素B族成員之一，是它是輔酶a（CoA）及酰基載體蛋白（acylcarrierprotein,acp）的組成部分。機(jī)體內(nèi)的泛酸，幾乎都用以組成輔酶a及acp的輔基。VB5前段生產(chǎn)工藝有多種，生產(chǎn)后段拆分方法有化學(xué)和微生物酶拆法兩種。VB5（D-維生素B5）首先要制備2個(gè)重要的中間體，分別為β-氨基丙酸和DL-泛解酸內(nèi)酯。β-氨基丙酸的合成有丙烯腈路線、丙烯酸路線、琥珀酰亞胺路線等，現(xiàn)國內(nèi)生產(chǎn)廠大多采用丙烯腈路線。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="DL泛解酸內(nèi)酯商家" src="https://tyunfile.71360.com/WaterMark/UploadFile/shlinchen/637278339844755859/788254.png"></div><p> 生產(chǎn)工藝為：D-泛解酸鈉溶液 –內(nèi)酯化，得到D-泛解酸內(nèi)酯溶液-溶液減壓濃縮脫除水分-結(jié)晶-固液分離，母液回套至減壓濃縮脫水-D-泛解酸內(nèi)酯成品-β-丙氨酸、氧化鈣、甲醇進(jìn)行鈣化反應(yīng)，生成β-丙氨酸鈣-加入甲醇、D-泛解酸內(nèi)酯進(jìn)行?；磻?yīng)，生成D-泛酸鈣-結(jié)晶、離心- D-泛酸鈣濕粉干燥-整粒、包裝入庫。 </p> <p> <br /> </p> <p> 一種高純度的D?泛酸內(nèi)酯的合成方法包括步驟:將DL?泛酸內(nèi)酯加入到水中,在pH為6.0?8.0用酶水解,得到D?泛解酸以及L?泛酸內(nèi)酯;將上述水溶液經(jīng)有機(jī)溶劑萃取,得到D?泛解酸的水溶液以及L?泛酸內(nèi)酯有機(jī)溶液。 </p></p><br /><p>文章來源地址: 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