L(-)-Cystine 99%
Supplier: Thermo Fisher Scientific
About this item
Synonyms: (R)-(-)-Cystine, (2R,2'R)-3,3'-Disulphanediylbis(2-aminopropanoic acid), (H-Cys-OH)2
- CAS Number:56-89-3
- Formula:HOOCCH(NH₂)CH₂SSCH₂CH(NH₂)COOH
- MDL Number:MFCD00064228
- Molecular Weight:240.3 g/mol
- Merck Index:13,02811
- Boiling Pt:428 °C (1013 hPa)
- Melting Pt:260…261 °C
- Density:1,677 g/cm³ (20 °C)
- Storage Temperature:Ambient
- EINECS:200-296-3
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Product Details & Documents
Synonyms: (R)-(-)-Cystine, (2R,2'R)-3,3'-Disulphanediylbis(2-aminopropanoic acid), (H-Cys-OH)2
- CAS Number:56-89-3
- Formula:HOOCCH(NH₂)CH₂SSCH₂CH(NH₂)COOH
- MDL Number:MFCD00064228
- Molecular Weight:240.3 g/mol
- Merck Index:13,02811
- Boiling Pt:428 °C (1013 hPa)
- Melting Pt:260…261 °C
- Density:1,677 g/cm³ (20 °C)
- Storage Temperature:Ambient
- EINECS:200-296-3
Documents
ACRO11180
SDS
Specifications for Product Family
Specification Test Results
- 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