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DL-Cysteine

Basic information Safety Supplier Related

DL-Cysteine Basic information

Product Name:
DL-Cysteine
Synonyms:
  • (RS)-2-Amino-3-mercapto-propansαure
  • Cysteine, DL-
  • DL-2-amino-3-mercaptopropanoicacid
  • DL-2-amino-3-mercaptopropionicacid
  • Carbocistein Impurity 2
  • DL-CYSTEINE FREE BASE
  • DL-2-Amino-3-mercaptopropionicacid~H-DL-Cys-OH
  • (+/-)-2-AMINO-3-MERCAPTOPROPIONIC ACID
CAS:
3374-22-9
MF:
C3H7NO2S
MW:
121.16
EINECS:
222-160-2
Product Categories:
  • Amino Acids
  • Pharmaceutical Intermediates
Mol File:
3374-22-9.mol
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DL-Cysteine Chemical Properties

Melting point:
225 °C (dec.) (lit.)
Boiling point:
293.9±35.0 °C(Predicted)
Density 
1.197 (estimate)
refractive index 
1.5130 (estimate)
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
form 
Powder
pka
2.07±0.10(Predicted)
color 
White to off-white
Water Solubility 
Soluble in water (partly), 1 N HCl (25 mg/ml), ethanol, and acetic acid. Insoluble in acetone.
BRN 
1721406
Stability:
Stable. Incompatible with strong oxidizing agents,
CAS DataBase Reference
3374-22-9(CAS DataBase Reference)
NIST Chemistry Reference
DL-Cysteine(3374-22-9)
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Safety Information

Hazard Codes 
Xn,Xi,C
Risk Statements 
20/21/22-36/37/38-22-35
Safety Statements 
26-36-37/39-45-36/37/39
RIDADR 
UN 2923 6.1(8) / PGIII
WGK Germany 
3
RTECS 
HA1595000
8-10-23
HS Code 
29309013

MSDS

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DL-Cysteine Usage And Synthesis

Chemical Properties

white solid

Uses

DL-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. Cysteine is commonly used as a precursor in the food and pharmaceutical industries. Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours.

Uses

DL-Cysteine is a NMDA agonist at quisqualate receptors at high concentration.

Definition

ChEBI: A sulfur-containing amino acid that is propanoic acid with an amino group at position 2 and a sulfanyl group at position 3.

Biochem/physiol Actions

NMDA agonist that is an agonist at quisqualate receptors at high concentration.

DL-Cysteine Preparation Products And Raw materials

Raw materials

DL-CysteineSupplier

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