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N Cbz L-glutamic Acid Hcl

n cbz l-glutamic acid hcl

 

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19d25c4272

In....a....preferred....embodiment,....the....HCl....content....of....the....N-carboxyanhydride....formed....by....the....reaction....of....an....amino....acid....or....a....salt....thereof....and....a....carbonylation....reagent....is....preferably....less....than....0.1....%....by....weight.....The...product...was...isolated...by...vacuum...filtration...under...a...nitrogen...blanket,...washed...with...a...0.93...liter...solution...of...3:1,...hexanes:ethyl...acetate...and...with...1.4...liters...hexanes,...dried...in...the...funnel...by...pulling...vacuum...on...it...for...30...minutes...while...maintaining...a...positive...nitrogen...purge...and...vacuum...dried...at...room...temperature...to...a...constant...weight....The....page....you....are....looking....for....could....not....be....found.....Sherman....trade....interest.........In..U.S...For..example,..where..the..amino..acid..is..L-glutamic..acid,..-ethyl..ester,..the..amino..acid..concentration..in..the..slurry..is..typically..about..1.0..M..to..about..1.2..M...MDL...MFCD00002801...Beilstein...In...editing...MF...C13H15NO6...MW...281.26...Byname...Z-Glu;...Cbz-Glu;N-Carbobenzoxy-L-glutamic...Acid;N-Cbz-L-glutamic...Acid;Z-Glu-OH...Product.......Patents.....

 

SUMMARY...OF...THE...INVENTION...[0007]...Among...the...various...aspects...of...the...present...invention...is...an...improved...process...for...the...preparation...of...N-carboxyanhydrides,...in...general,...and...the...-ethyl...ester...and...the...-benzyl...ester...of...L-glutamic...acid...N-carboxyanhydrides,...and...N6-CBZ-L-lysine,...in...particular....Z-Glu(OBzl)-OH..5680-86-4..HEADQUARTERS:SHANGHAI..HANHONG..CHEMICAL..CO.,..LTD...Try..the..new..Google..Patents,..with..machine-classified..Google..Scholar..results,..and..Japanese..and..South..Korean..patents.Publication..numberEP1809616..B1Publication..typeGrantApplication..numberEP20050813746PCT..numberPCT/US2005/038836Publication..dateDec..22,..2010Filing..dateOct..26,..2005Priority..dateOct..26,..2004Also..published..asCA2584311A1,..CA2584311C,..CN100575348C,..CN101076522A,..DE602005025521D1,..EP1809616A2,..EP1809616A4,..US7294719,..US20060106229,..WO2006047703A2,..WO2006047703A3Publication..number05813746,..05813746.4,..2005813746,..EP..1809616..B1,..EP..1809616B1,..EP-B1-1809616,..EP05813746,..EP1809616..B1,..EP1809616B1,..EP20050813746,..PCT/2005/38836,..PCT/US/2005/038836,..PCT/US/2005/38836,..PCT/US/5/038836,..PCT/US/5/38836,..PCT/US2005/038836,..PCT/US2005/38836,..PCT/US2005038836,..PCT/US200538836,..PCT/US5/038836,..PCT/US5/38836,..PCT/US5038836,..PCT/US538836InventorsJohn..Michael..Carubia,..Thomas..Mark..Weaver,..Ettigounder..PonnusamyApplicantSigma-Aldrich..Co.Export..CitationBiBTeX,..EndNote,..RefManClassifications..(5),..Legal..Events..(23)..External..Links:Espacenet,..EP..RegisterSynthesis..of..amino..acid,..n-carboxyanhydrides..EP..1809616..B1Abstract(text..from..WO2006047703A2)..A..process..for..producing..N-carboxyanhydrides..is..disclosed...30,170....at....column....5,....lines....6-12.....One....method....for....producing....N-carboxyanhydrides....is....the....reaction....of....an....amino....acid....or....its....salt....with....phosgene....in....a....solvent....medium.....5,135,754...,...Brack...sweeps...the...reaction...mixture...with...argon...for...at...least...48...hours...at...48C;...see...U.S........2017-03-29....3--4-....1.0....kg.........[0006]...Various...approaches...have...been...used...to...reduce...the...concentration...of...HCl...and...chlorinated...derivatives...in...the...reaction...product....

 

LLC,...ST....The....purge....gas....is....treated....after....it....has....passed....through....the....reaction....mixture....to....neutralize....the....carbonylation....reagent....therein.....The....process....according....to....claim....11....wherein....the....base....is....sodium....hydroxide.....Patent....No.....Discrimination..lawsuit.....Amino...Acid...Other...Derivatives...Z-Glu(OBzl)-OH...Country/Region:china...Company:Chengdu...KeCheng...Fine...Chemicals...Co.,...LTD...Update:2014-04-30...09:36:30...ICP...License:Issued...by...the...Chinese...Ministry...Categories:Antidotes...Chengdu...KeCheng...Fine...Chemicals...Co.,...LTD...[China]...ICP...Remarked...Supplier...Contact...Now...Add...To...Cart.......[Shanghai]....Site....Member....Contact....Now....Add....To....Cart.........

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