Biochemisches Handlexikon: XI. Band (4. Erganzungsband) - download pdf or read online

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By Géza Zemplén (auth.), Professor Dr. Med. Et Phil. H. C. Emil Abderhalden, Wolfgang Langenbeck, Ernst B. H. Waser, Géza Zemplén (eds.)

ISBN-10: 3642889735

ISBN-13: 9783642889738

ISBN-10: 3642908284

ISBN-13: 9783642908286

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Extra resources for Biochemisches Handlexikon: XI. Band (4. Erganzungsband)

Example text

Die Hydrolyse 4 ) mit 10% HCl gibt p-Naphthalinsulfoglycin. In der Mutterlauge bleibt das Cystin als salzsaures Salz. Es entsteht eine partielle Racemisierung bei der Hydrolyse, denn das Chlorhydrat des Cystins hatte nur mehr eine spezifische Drehung von etwa - 185° nach Jinks8). Di-d-brompropionyl-I-cystin 2). -Gewicht: 510,14. Zusammensetzung: C12H1806NaSaBra HOOC • CH-CHa . S . S . CHa-CH . COOH I I CHs' CHBr . CO . NH HN . CO • CHBr. CHa' Darstellung: Aus I-Cystin mit d-Brompropionylchlorid.

Etwa 200°. Leicht loslich in Wasser. Biuretreaktion positiv. llt in 5proz. ttigte Ammoniumsulfatlosung nicht aus. -Gewicht: 734,56. CsoHaoOluN,S, = HOOC-CH . CHa . S • S . CHa-CH . COOH I I CO·NH HN·CO I I CluH? SOa' NH· CHI CH a · NH· SOa' C1uH 7 • DigIycyl-cystin') wird mit p-Naphthalinsulfochlorid behandelt. Das Endprodukt ist ein amorphes Pulver. Optisches Verhalten in In-NaOH: 8 = 0,0503 g;. G = 6,9962 g; d = 1,0606; /Xldm = - 0,7°; [/X]fl'0 = - 91,8° (fUr absol. trockene Substanz). Beirn Erhitzen zersetzt es sich bei 200°, ohne vorheriges Schmelzen unter Gasentwicklung und Verkohlung.

191'2', I, 745. 26 Aktive Polypeptide. Bippenylureidobernsteinsaurediathylester 1) C17H2S0sNs. Aus Hippenylisocyanat und I-Asparaginsaurediathylester. WeiBe Nadelchen aus absol. Alkohol, Schmelzp. 150°, leicht loslich in heiBem Wasser, Alkohol und Chloroform, unloslich in Ather und Benzol. Bippenylureidobernsteinsaure 1) C1sH1506Ns' Aus vorstehendem Ester mit heiBem Barytwasser. WeiBe, rhomboedrische Krystalle aus Wasser, Schmelzp. 159°, lOslich in heiBem Wasser und Alkohol, sehr wenig lOslich in Ather und Benzol.

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Biochemisches Handlexikon: XI. Band (4. Erganzungsband) by Géza Zemplén (auth.), Professor Dr. Med. Et Phil. H. C. Emil Abderhalden, Wolfgang Langenbeck, Ernst B. H. Waser, Géza Zemplén (eds.)


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