CAS 52-90-4

L-(+)-Cysteine

Description:

L-(+)-Cysteine, with the CAS number 52-90-4, is a naturally occurring amino acid that plays a crucial role in protein synthesis and various metabolic processes. It is classified as a non-essential amino acid, meaning that the body can synthesize it from other compounds. Cysteine contains a thiol (-SH) group, which makes it a sulfur-containing amino acid, contributing to its unique properties, such as the ability to form disulfide bonds that stabilize protein structures. This amino acid is known for its antioxidant properties, as it can help in the synthesis of glutathione, a vital antioxidant in the body. L-(+)-Cysteine is typically found in high-protein foods and is also available as a dietary supplement. It is soluble in water and has a slightly acidic nature, with a pKa value that reflects its ability to donate protons. In addition to its biological significance, cysteine is utilized in various industrial applications, including the production of pharmaceuticals and cosmetics, due to its functional properties.

Formula: C₃H₇NO₂S

InChI: InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1

InChI key: InChIKey=XUJNEKJLAYXESH-REOHCLBHSA-N

SMILES: [C@@H](C(O)=O)(CS)N

Synonyms:

• (+)-2-Amino-3-mercaptopropionic acid
• (2R)-2-Amino-3-sulfanylpropanoic acid
• (R)-2-Amino-3-mercaptopropanoic acid
• (R)-2-Amino-3-sulfanylpropanoic acid
• (R)-Cysteine
• (S)-(-)-Cysteine
• 11: PN: WO2021055880 SEQID: 12 claimed protein
• 2-Amino-3-mercaptopropanoic acid
• <span class="text-smallcaps">L</span>-(+)-Cysteine
• <span class="text-smallcaps">L</span>-Alanine, 3-mercapto-
• <span class="text-smallcaps">L</span>-Cys
• Cystein
• Cysteine
• Cysteine, <span class="text-smallcaps">L</span>-
• Cysteine, L-
• E 920
• H-Cys-OH
• Half-cystine
• L-Alanine, 3-mercapto-
• L-Cys
• L-Cystein
• L-Cysteine Base
• L-Cysteine Free Base Crystalline
• L-beta-mercaptoalanine
• L-cisteina
• Nsc 8746
• Propanoic acid, 2-amino-3-mercapto-, (R)-
• Thioserine
• α-Amino-β-thiolpropionic acid
• β-Mercaptoalanine
• L-Cysteine
• L-Cysteine

N-Acetyl-S-(4-hydroxy-3-methyl-2-trans-buten-1-yl)-L-cysteine Dicyclohexylammonium Salt

Controlled Product

CAS: 52-90-4

Applications A metabolite of isoprene.
References Pecivova, P. et al.: J. Sci. Food Agric., 90, 1681 (2010); Hui, N. et al.: Meat Sci. Appl., 74 (2001); Kiviharju, K. et al.: J. Biotechnol., 117, 299 (2005);

Formula: C₁₂H₂₃N·C₁₀H₁₇NO₄S

Color and Shape: Neat

Molecular weight: 428.629

Ref: TR-A179030

L-Cysteine

CAS: 52-90-4

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Formula: C₃H₇NO₂S

Purity: Min. 99 Area-%

Molecular weight: 121.16 g/mol

Ref: 3D-Q-201286

Acetylcysteine EP Impurity B (L-Cysteine)

CAS: 52-90-4

Formula: C₃H₇NO₂S

Color and Shape: White To Off-White Solid

Molecular weight: 121.16

Ref: 4Z-C-773

Acetylcysteine EP Impurity B-13C3 (L-Cysteine-13C3)

CAS: 52-90-4

Formula: C₃H₇NO₂S

Molecular weight: 124.13

Ref: 4Z-C-7738

L-Cysteine - non-animal origin

CAS: 52-90-4

L-Cysteine is a non-animal derived amino acid that has been shown to help maintain normal iron levels in the body. It also helps reduce oxidative injury and inflammation. L-Cysteine is made naturally by the human body, but can be found in some foods as well. L-Cysteine has been shown to help regulate protein oxidation and injury responses in humans. L-Cysteine plays a role in the immune system by binding to Toll-like receptors, which are proteins on cells that are involved with inflammation and immunity. L-Cysteine also plays a role in the immune system by stimulating antibody production, which is important for fighting infection. Cysteine is an amino acid involved with many biochemical reactions, including synthesis of proteins and DNA molecules. Cysteine also regulates gene expression through response elements that are found in the promoter regions of genes. The rate constant for cysteine is 0.00001s^(-1).

Formula: C₃H₇NO₂S

Color and Shape: White Powder

Molecular weight: 121.16 g/mol

Ref: 3D-FC76819