L(-)-Cystin 99%

Lieferant: Thermo Scientific

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

ACRO111800025EA 1275 EUR
ACRO111800025 ACRO111801000 ACRO111805000
L(-)-Cystin 99%
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
EINECS: 200-296-3
Merck Index: 13,02811

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Spezifikation Testergebnisse

Appearance White to almost white Crystalline powder or crystals
Infrared spectrum Conforms
Loss on drying ≤0.5 % (1 g, 105°C, 3 h)
Sulfated ash ≤0.1 %
Specific optical rotation -210° to -224° (20°C, 589 nm) (c=2, 1 M HCl) (on dried substance)
Titration excess NaOH ≥98.5 % (On dried substance)
Chloride (Cl) ≤200 ppm
Sulfate (SO4) ≤300 ppm
Ammonium (NH4) ≤200 ppm
Iron (Fe) ≤10 ppm
Heavy metals (as Pb) ≤10 ppm

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