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L(-)-cystyna, meets analytical specification of Ph.Eur.

Dostawca: Thermo Fisher Scientific

Synonim: (R)-(-)-Cystine, (2R,2'R)-3,3'-Disulphanediylbis(2-aminopropanoic acid), (H-Cys-OH)2

406160010 406160250 406161000
ACRO406160010EA 3140 PLN
ACRO406160010 ACRO406160250 ACRO406161000
L(-)-cystyna, meets analytical specification of Ph.Eur.
L(-)-cystyna
Formuła: HOOCCH(NH₂)CH₂SSCH₂CH(NH₂)COOH
Temp. Wrzenia: 428 °C (1013 hPa)
Temp. topnienia: 260…261 °C
Gęstość: 1,677 g/cm³ (20 °C)
Temperatura przechowywania: Temperatura otoczenia
Numer MDL: MFCD00064228
Numer CAS: 56-89-3

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Wyniki testów specyfikacyjnych

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


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