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

solubility 

Aqueous Acid (Sparingly), DMSO (Sightly), Water (Slightly)

pka

2.07±0.10(Predicted)

form 

Powder

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,

LogP

0.230 (est)

CAS DataBase Reference

3374-22-9(CAS DataBase Reference)

NIST Chemistry Reference

DL-Cysteine(3374-22-9)

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

F 

8-10-23

HS Code 

29309013

MSDS

• Language:English Provider:2-Amino-3-mercaptopropionic acid
• Language:English Provider:SigmaAldrich

DL-Cysteine Usage And Synthesis

Chemical Properties

white solid

Uses

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

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.

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(3374-22-9)Related Product Information

• DL-Cysteine hydrochloride
• DL-Ornithine hydrochloride
• DL-Homoserine
• DL-Histidine
• DL-Pyroglutamic acid
• DL-Leucine
• DL-Arginine hydrochloride monohydrate
• DL-tert-Leucine
• allo-DL-Threonine
• 2-amino-3-(1H-indol-3-yl)propanamide
• 4-HYDROXYMANDELIC ACID MONOHYDRATE
• DL-Glutamine
• DL-Cysteine
• 6-Aminopenicillanic acid
• LANTHIONINE
• S-CARBOXYMETHYL-L-CYSTEINE
• DL-PENICILLAMINE
• 3-Mercaptopropionic acid