L(-)-Cystin, erfüllt analytische Spezifikationen von Ph.Eur.

Lieferant: Thermo Scientific

Synonyme: (2R,2'R)-(-)-3,3'-Dithiobis(2-aminopropansäure)(R)-(-)-Cystin(H-Cys-OH)2

ACRO406161000EA 91.2 EUR
ACRO406161000 ACRO406160010 ACRO406160250
L(-)-Cystin, erfüllt analytische Spezifikationen von Ph.Eur.
L(-)-Cystin
Formel: HOOCCH(NH₂)CH₂SSCH₂CH(NH₂)COOH
Molecular Weight: 240,3 g/mol
Siedepunkt: 428 °C (1013 hPa)
Schmelzpunkt: 260…261 °C
Lagertemperatur: Raumtemperatur
MDL: MFCD00064228
CAS-Nummer: 56-89-3

Bestellen

Spezifikation Testergebnisse

Appearance White to almost white Crystalline powder
Infrared spectrum Conforms
Loss on drying ≤0.5 % (1 g, 105°C)
Sulfated ash ≤0.1 % (1 g)
Appearance of solution Clear and not more intensely coloured than reference solution Y7
Specific optical rotation -218° to -224° (20°C, 589 nm) (c=2, 1M HCl) (On dried substance)
Titration 98.5 to 101.0 % (On dried substance)
Sulfates ≤300 ppm
Chlorides ≤200 ppm
Ammonium (NH4) ≤200 ppm
Iron (Fe) ≤10 ppm
Ninhydrin-positive substances Passes test

Learn more

About VWR

Avantor is a vertically integrated, global supplier of discovery-to-delivery solutions for...

Mehr About VWR