Epimeer

Twee chemische verbindingen zijn epimeren als in precies één asymmetrisch koolstofatoom de configuratie omgekeerd is. Indien er meerder asymmetrische c-atomen een omgekeerde configuratie hebben spreken we van diastereo-isomeren. Dit zijn vormen van stereo-isomeren.

De term epimeer wordt vooral gebruikt in de suikerchemie.

D-glucose D-mannose D-galactose
D-glucose D-mannose D-galactose

Bijvoorbeeld de monosachariden D-mannose en D-galactose zijn de twee natuurlijk voorkomende epimeren van D-glucose. D-mannose verschilt van D-glucose in de configuratie rond C nummer 2, D-galactose verschilt van D-glucose in de configuratie rond C nummer 4. D-galactose en D-mannose zijn geen epimeren van elkaar: ze verschillen in 2 configuraties.

Read other articles:

LeviathanPoster Rilis TeatrikalSutradaraAndrey ZvyagintsevProduserAlexander RodnyanskyDitulis olehAndrey ZvyagintsevOleg NeginPemeranAleksei SerebryakovElena LyadovaVladimir VdovichenkovRoman MadyanovSinematograferMikhail KrichmanTanggal rilis 23 Mei 2014 (2014-05-23) (Cannes) 5 Februari 2015 (2015-02-05) (Rusia) Durasi141 minutes[1]NegaraRusiaBahasaRusiaAnggaranRUB 220 Mn.Pendapatankotor$3,400,000[2] Leviathan (bahasa Rusia: Левиафан, Leviafan) a...

 

Theta Canis Majoris Lokasi θ Canis Majoris (dilingkari) Data pengamatan Epos J2000.0      Ekuinoks J2000.0 (ICRS) Rasi bintang Canis Major Asensio rekta  06j 54m 11,39877d[1] Deklinasi  −12° 02′ 19,0674″[1] Magnitudo tampak (V) 4,08[2] Ciri-ciri Kelas spektrum K4 III[2] Indeks warna U−B +1,69[3] Indeks warna B−V +1,43[3] AstrometriKecepatan radial (Rv)+9...

 

Wiley-BlackwellPerusahaan indukJohn Wiley & SonsDidirikan1922Negara asalAmerika SerikatKantor pusatHoboken, New JerseyJenis terbitanBuku, jurnal akademikSitus resmiwww.wiley.com/wiley-blackwell Wiley-Blackwell adalah divisi penerbitan ilmiah, teknis, medis, dan akademik internasional milik John Wiley & Sons. Divisi ini dibentuk melalui merger John Wiley Global Scientific, Technical, and Medical dengan Blackwell Publishing setelah Wiley mengakuisisi Blackwell tahun 2007.[1] Seb...

Invasion des îles Kouriles Opérations dans les îles Kouriles. Informations générales Date 18 août – 1er septembre 1945 Lieu Îles Kouriles Issue Victoire soviétique Changements territoriaux Occupation et annexion des îles Kouriles par l'Union Soviétique Belligérants Union soviétique Empire du Japon Commandants Alexander Sergeevich Ksenofontov Leonty Georgievich Cheremisov A.R.Gnechko Tsutsumi Fusaki Forces en présence Trois divisions (15 000 hommes) 80 000 hommes Pertes 1 ...

 

Ibu Negara Amerika SerikatFirst Lady of the United StatesPetahanaJill Bidensejak 20 Januari 2021GelarMadam First LadyDr. BidenSingkatanFLOTUSKediamanGedung PutihPejabat perdanaMartha WashingtonDibentuk30 April 1789; 234 tahun lalu (1789-04-30)Situs webwhitehouse.gov Ibu Negara Amerika Serikat (Inggris: First Lady of the United States, disingkat FLOTUS) adalah gelar yang dipegang oleh pramutamu wanita Gedung Putih, biasanya istri dari presiden Amerika Serikat, dan berlangung sela...

 

American politician For the Civil War general, see Nathan George Evans. Nathan EvansMember of the U.S. House of Representativesfrom Ohio's 14th districtIn officeMarch 4, 1847 – March 3, 1851Preceded byAlexander HarperSucceeded byAlexander Harper Personal detailsBorn(1804-06-24)June 24, 1804Belmont County, OhioDiedSeptember 27, 1879(1879-09-27) (aged 75)Cambridge, OhioResting placeSouth CemeteryPolitical partyWhig Nathan Evans (June 24, 1804 – September 27, 1879) ...

Voce principale: Unione Sportiva Dilettantistica Novese. Unione Sportiva NoveseStagione 1922-1923Sport calcio Squadra Novese Allenatore Commissione Tecnica[1] Presidente Mario Ferretti Prima Divisione8º posto nel girone C della Lega Nord. StadioCampo di Piazza d'Armi 1921-1922 1923-1924 Si invita a seguire il modello di voce Questa pagina raccoglie i dati riguardanti l'Unione Sportiva Novese nelle competizioni ufficiali del gioco del calcio della stagione 1922-1923. Indice 1 St...

 

NASA space probe launched in March 1972 Pioneer 10Artist's conception of the Pioneer 10 spacecraftMission typeOuter Solar System andheliosphere explorationOperator NASA / ARCCOSPAR ID1972-012A SATCAT no.5860WebsitePioneer Project website (archived) NASA Archive pageMission duration30 years, 10 months and 21 days[1] Spacecraft propertiesManufacturer TRWLaunch mass258 kg[1]Power155 watts (at launch) Start of missionLaunch dateMarch 3, 1972 (197...

 

Simon Dach Simon Dach (Memel, 29 luglio 1605 – Königsberg, 15 aprile 1659) è stato uno scrittore e poeta tedesco. Indice 1 Gli inizi 2 A metà della vita 3 Il successo 4 Monumento a Simon Dach 5 Altri progetti 6 Collegamenti esterni Gli inizi A Königsberg Simon Dach ricevette una classica educazione. Studiò latino a Wittenberg e a Magdeburgo, e studiò a partire dal 1626 nell'Università Albertina di Königsberg teologia e filosofia, dopo di che si ritrasferì a Magdeburgo. Durante la g...

Zailiism在理教 ZàilǐjiàoTypeChinese salvationist religionFounderYang ZaiOrigin17th century TianjinMembers1948: 15 million[1]Other name(s)Liism, Gate of the Principle (理门 Lǐmén), White-Clad Way (白衣道), Octagon Way (八方道)Official websitehttp://www.liism.org/ Part of a series onChinese folk religion Concepts Tian—Shangdi Qi Shen Ling Xian ling Yinyang Hundun Mingyun Yuanfen Baoying Wu Theory Chinese theology Chinese gods and immortals Chinese mythology Chinese cre...

 

La banconota da 500 lire è stata uno dei tagli di cartamoneta della lira italiana circolante prima dell'introduzione dell'euro, stampata in diverse emissioni dal 1874 fino al 1982. Indice 1 Regno d'Italia 2 Repubblica italiana 2.1 L'Italia ornata di spighe 2.2 Aretusa 2.3 Mercurio 3 500 Am-lire 4 Note 5 Bibliografia 6 Voci correlate 7 Altri progetti 8 Collegamenti esterni Regno d'Italia Le prime banconote di questo valore emesse dallo Stato italiano furono quelle stampate dalla Banca Naziona...

 

سلطان المغرب مولاي اليزيد مولاي اليزيد سلطان المغرب فترة الحكم1790 - 1792م تاريخ التتويج 18 شعبان 1204هـ معلومات شخصية الاسم الكامل اليزيد بن محمد بن عبد الله بن إسماعيل بن الشريف الميلاد 1750مفاس  الوفاة 23 جمادى الثانية 1206هـ 16 يناير 1792م.بالقرب من زكورة على حاشية واد تانسيفت. مكا...

Armed conflict in Angola between 1975 and 2002 Angolan Civil WarPart of the Cold War (until 1991) and the First & Second Congo War (from 1996 onwards) Clockwise from top left Cuban Revolutionary Armed Forces (FAR) commanders during the Battle of Quifangondo; A building riddled with bullets in Huambo, after the war; A Cuban PT-76 in Luanda; A car belonging to the FAPLA burning during Operation Savannah Date11 November 1975 – 4 April 2002(26 years, 4 months, 3 weeks an...

 

اضغط هنا للاطلاع على كيفية قراءة التصنيف العائق رسم توضيحي لنبات (باللاتينية: Delphinium staphisagria) المرتبة التصنيفية جنس[1]  التصنيف العلمي النطاق: حقيقيات النوى المملكة: النباتات الشعبة: مستورات البذور الطائفة: ثنائيات الفلقة الرتبة: الحوذانيات Ranunculales الفصيلة: الحوذانية �...

 

Brazilian footballer Marcinho Marcinho playing for Qatar SCPersonal informationFull name Márcio José de OliveiraDate of birth (1984-07-20) 20 July 1984 (age 40)Place of birth Irapuã, BrazilHeight 1.71 m (5 ft 7 in)Position(s) Attacking midfielderYouth career2001–2002 CruzeiroSenior career*Years Team Apps (Gls)2003–2004 Cruzeiro 45 (8)2005 → Grêmio (loan) 23 (2)2005–2006 Gençlerbirliği 6 (0)2006–2007 Atlético Mineiro 58 (9)2008 → Flamengo (loan) 11 (7)200...

American philosopher (1942–2021) Richard BoydRichard BoydBornRichard Newell Boyd(1942-05-19)May 19, 1942Washington, D.C., U.S.DiedFebruary 20, 2021(2021-02-20) (aged 78)Cleveland, Ohio, U.S.EducationMITSpouseBarbara KoslowskiEraContemporary philosophyRegionWestern philosophySchoolAnalyticScientific realismMoral realismphilosophical naturalism[1]ThesisA Recursion-Theoretic Characterization of the Ramified Analytical Hierarchy (1970)Doctoral advisorRichard Cartwright[2&#...

 

Regional administrative district of Canada's Northwest Territories (1882–1905) Provisional District of AlbertaProvisional district of the North-West Territories1882–1905A 1900 map showing the boundaries of the District of Alberta.History • Established 1882• Disestablished 1905 Today part ofAlberta The District of Alberta was one of four districts of the Northwest Territories created in 1882.[1][2] It was styled the Alberta Provisional District to disting...

 

يفتقر محتوى هذه المقالة إلى الاستشهاد بمصادر. فضلاً، ساهم في تطوير هذه المقالة من خلال إضافة مصادر موثوق بها. أي معلومات غير موثقة يمكن التشكيك بها وإزالتها. (مارس 2016) نيو هيفن، كونيتيكت هارتفورد، كونيتيكت، عاصمة كونيتيكت ستامفورد واتربوري قائمة مدن كونيتيكت هذه قائمة مدن ...

Carrack used in Ferdinand Magellan's expeditions; first ship to circumnavigate the globe This article is about a Spanish carrack. For other ships with the same name, see Victoria (disambiguation) and Queen Victoria (ship). Replica of Victoria, built in 1992, visiting Nagoya, Japan, for Expo 2005 History Crown of Spain NameVictoria NamesakeSanta Maria de la Victoria OwnerCrown of Spain Acquired1518 Renamed1519 FateDisappeared en route to Seville from the Antilles, 1570 [1] NotesFirst s...

 

مجد القاسم معلومات شخصية اسم الولادة معضاد مؤيد إبراهيم قاسم الميلاد 4 مايو 1970 (العمر 54 سنة)قرية الثعلة / محافظة السويداء/ سوريا الجنسية  سوريا الحياة الفنية الاسم المستعار مجد القاسم الآلات الموسيقية صوت بشري  المدرسة الأم جامعة دمشق  المهنة مطرب وملحن سنوات النشا�...