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Catalog Number:
00437
CAS Number:
52-90-4
L-Cysteine
Purity:
≥ 99% (Assay)
Synonym(s):
L-Cys-OH, (R)-2-Amino-3-mercaptopropionic acid
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$18.50 /25G
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Product Information

L-Cysteine is a naturally occurring amino acid that plays a crucial role in protein synthesis and cellular metabolism. Known for its antioxidant properties, L-Cysteine is essential in the production of glutathione, a powerful antioxidant that helps protect cells from oxidative stress. This compound is widely utilized in the food and pharmaceutical industries, where it serves as a dietary supplement, a flavor enhancer, and a precursor for the synthesis of other important biomolecules. Researchers and industry professionals appreciate L-Cysteine for its ability to improve skin health, support immune function, and enhance detoxification processes in the body. Its applications extend to the cosmetic industry as well, where it is incorporated into formulations aimed at promoting hair and skin vitality.

In addition to its health benefits, L-Cysteine is also used in various biochemical assays and laboratory applications, making it a valuable reagent for researchers. Its unique properties, such as its ability to form disulfide bonds, make it an important component in the study of protein structure and function. With its multifaceted applications and benefits, L-Cysteine stands out as a versatile compound for both industrial and research purposes.

Synonyms
L-Cys-OH, (R)-2-Amino-3-mercaptopropionic acid
CAS Number
52-90-4
Purity
≥ 99% (Assay)
Molecular Formula
C3H7NO2S
Molecular Weight
121.16
MDL Number
MFCD00064306
PubChem ID
594
Melting Point
220 °C (dec)
Appearance
White crystalline powder
Optical Rotation
[a]D20 = 8.3 - 9.5 °
Conditions
Store at RT
General Information
Synonyms
L-Cys-OH, (R)-2-Amino-3-mercaptopropionic acid
CAS Number
52-90-4
Purity
≥ 99% (Assay)
Molecular Formula
C3H7NO2S
Molecular Weight
121.16
MDL Number
MFCD00064306
PubChem ID
594
Melting Point
220 °C (dec)
Appearance
White crystalline powder
Optical Rotation
[a]D20 = 8.3 - 9.5 °
Conditions
Store at RT
Properties
Additional property information coming soon!
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Safety and Regulations
Hazmat
No
Antibiotic
No
DEA-regulated
No
Warnings
-
Applications

L-Cysteine is widely utilized in research focused on:

  • Antioxidant Production: It serves as a precursor for the synthesis of glutathione, a powerful antioxidant that helps protect cells from oxidative stress, making it valuable in health and wellness industries.
  • Food Industry: Used as a flavor enhancer and dough conditioner, L-Cysteine improves the texture and shelf-life of baked goods, appealing to food manufacturers looking for quality improvements.
  • Pharmaceutical Applications: It is incorporated in formulations to support respiratory health by breaking down mucus, which is beneficial for patients with chronic obstructive pulmonary disease (COPD) and cystic fibrosis.
  • Cosmetic Products: L-Cysteine is found in skin care formulations for its skin-repairing properties, helping to improve skin texture and reduce signs of aging, making it popular among cosmetic brands.
  • Research in Biochemistry: It is widely used in studies involving protein structure and function due to its unique thiol group, which can form disulfide bonds, aiding researchers in understanding protein interactions.

Citations