Millipore Sigma Vibrant Logo

102838 L-Cysteine

L-Cysteine for biochemistry. CAS 52-90-4, pH 4.5 - 5.5 (100 g/l, H₂O, 20 °C).

L-Cysteine MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.

Synonyms: a-Amino-ß-mercapto propionic acid, αlpha-Amino-ß-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid

View Products on Sigmaaldrich.com
102838
View Pricing & Availability

Overview

Replacement Information

Key Spec Table

CAS #Empirical Formula
52-90-4C₃H₇N O₂S

Pricing & Availability

Catalogue Number AvailabilityPackaging Qty/Pack Price Quantity
1.02838.0025
Retrieving availability...
—
Limited Availability Limited Availability
In Stock 
Discontinued
Limited Quantities Available
Availability to be confirmed
    Remaining : Will advise
      Remaining : Will advise
      Will advise
      Contact Customer Service
      Contact Customer Service

      		 Plastic bottle 25 g
      Retrieving price...
      Price could not be retrieved
      Minimum Quantity is a multiple of
      Maximum Quantity is
      Upon Order Completion More Information
      You Saved ()
       
      —
      Request Pricing
      		 —
      1.02838.0100
      Retrieving availability...
      —
      Limited Availability Limited Availability
      In Stock 
      Discontinued
      Limited Quantities Available
      Availability to be confirmed
        Remaining : Will advise
          Remaining : Will advise
          Will advise
          Contact Customer Service
          Contact Customer Service

          		 Plastic bottle 100 g
          Retrieving price...
          Price could not be retrieved
          Minimum Quantity is a multiple of
          Maximum Quantity is
          Upon Order Completion More Information
          You Saved ()
           
          —
          Request Pricing
          		 —
          Description
          Catalogue Number102838
          Synonymsa-Amino-ß-mercapto propionic acid, αlpha-Amino-ß-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid
          References
          Product Information
          CAS number52-90-4
          EC number200-158-2
          Hill FormulaC₃H₇N O₂S
          Molar Mass121.16 g/mol
          HS Code2930 90 13
          Structure formula ImageStructure formula Image
          Quality LevelMQ100
          Applications
          ApplicationL-Cysteine for biochemistry. CAS 52-90-4, pH 4.5 - 5.5 (100 g/l, H₂O, 20 °C).
          Biological Information
          Physicochemical Information
          Density1.66 g/cm3 (45 °C)
          Ignition temperature420 °C
          Melting Point>203 °C
          pH value4.5 - 5.5 (100 g/l, H₂O, 20 °C)
          Bulk density300 kg/m3
          Solubility280 g/l
          Dimensions
          Materials Information
          Toxicological Information
          LD 50 oralLD50 Rat 1890 mg/kg
          Safety Information according to GHS
          RTECSHA1600000
          Storage class10 - 13 Other liquids and solids
          WGKWGK 1 slightly hazardous to water
          Disposal3
          Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
          Safety Information
          Categories of dangerharmful
          Product Usage Statements
          Storage and Shipping Information
          StorageStore below +30°C.
          Packaging Information
          Transport Information
          Supplemental Information
          Specifications
          Assay (perchloric acid titration, calculated on dried substance)≥ 99.0
          Identity (IR-spectrum)passes test
          Appearancecolorless to white, needle-shaped crystals
          Appearance of solution (100 g/l, hydrochloric acid  2 mol/l)clear and colorless
          Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 1 mol/l, calc. on dried substance)+8.3 to +9.5
          pH (25 g/l; CO₂-free water)4.5 - 5.5
          Chloride (Cl)≤ 0.04 %
          Sulfate (SO₄)≤ 0.03 %
          Heavy metals (as Pb)≤ 0.001 %
          As (Arsenic)≤ 0.0001 %
          Ca (Calcium)≤ 0.001 %
          Co (Cobalt)≤ 0.0005 %
          Fe (Iron)≤ 0.001 %
          K (Potassium)≤ 0.0005 %
          Mg (Magnesium)≤ 0.0005 %
          Na (Sodium)≤ 0.01 %
          NH₄ (Ammonium)≤ 0.02 %
          Zn (Zinc)≤ 0.0005 %
          Foreign amino acids≤ 0.5 %
          Other ninhydrine positive substances≤ 0.1 %
          Loss on drying (105 °C; 3 h)≤ 0.5 %
          Global Trade Item Number
          Catalogue Number GTIN
          1.02838.0025 04022536037363
          1.02838.0100 04022536037370