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

Fornitore: Thermo Scientific

Synonyms: (H-Cys-OH)2

406160010 406160250 406161000
ACRO406160010EA 536 EUR
ACRO406160010 ACRO406160250 ACRO406161000
L(-)-Cistina, meets analytical specification of Ph.Eur.
L(-)-Cistina
Formula: HOOCCH(NH₂)CH₂SSCH₂CH(NH₂)COOH
Peso molecolare: 240,3 g/mol
Punto di ebollizione: 428 °C (1013 hPa)
Punto di fusione: 260…261 °C
Densità: 1,677 g/cm³ (20 °C)
Temperatura di stoccaggio: Ambiente
MDL Number: MFCD00064228
CAS Number: 56-89-3

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Risultati del test di specificazione

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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