S-(Carboxymethyl)-L-cysteine 98%

Supplier: Thermo Scientific Chemicals
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Synonyms: 3-[(Carboxymethyl)thio]alanine, Carbocisteine, Carbocysteine

22581-0010 22581-0050 22581-0250 22581-1000
TS22581-0010EA 20 USD
TS22581-0010 TS22581-0050 TS22581-0250 TS22581-1000
S-(Carboxymethyl)-L-cysteine 98%
S-(Carboxymethyl)-L-cysteine
Formula: C₅H₉NO₄S
MW: 179.19 g/mol
Melting Pt: 205…207 °C
Storage Temperature: Ambient
MDL Number: MFCD00002614
CAS Number: 638-23-3

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Specification Test Results

Appearance White to off-white Powder
Infrared spectrum Conforms
Loss on drying ≤0.5 % (105°C, 3 hrs)
TLC ≥97.5 %
Appearance of solution (1% soln. in 0.1 N HCl, gently warmed): clear colorless
Residue after ignition ≤0.2 %
Specific optical rotation -29° to -33° (20°C, 589 nm) (c=1, 10% NaHCO3)
Titration with HClO4 ≥97.5 %
Chloride (Cl) ≤1000 ppm
Iron (Fe) ≤5 ppm
Heavy metals (as Pb) ≤10 ppm

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