About L-Cystine

L-Cystine is a non-essential amino acid. This means your body can synthesize sufficient L-cystine to meet its requirements.


Cystine along with the amino acid methionine are the amino-acids necessary for wound healing and forming of epithelial tissue. Cystine is known to stimulate the hematopoietic system and promote the formation of white and red blood cells.

Cystine is used as a component for parenteral and enteral nutrition. It is used as the main active ingredient for medications used to treat dermatitis. Cystine is also used in drugs that protect liver function.


L-Cystine is manufactured via an enzymatic conversion from DL-amino thiazoline carboxylic acid.. No materials of animal origin are used in the manufacturing process. All amino acids from Ajinomoto are manufactured under cGMP conditions.


Abbreviation: L-Cys2
CAS Number: 56-89-3
Conforms To: EP
Chemical Name: 3,3’ –Disulfanediylbis (2R)-2-aminopropanoic acid
Chemical Formula: C6H12N2O4S2
Molecular Weight: 240.3000
Nitrogen Content: 0.1166
Assay: 98.5 to 101.0%
Solubility: Practically insoluble in water
Description: White crystals or crystalline powder; tasteless

Action bulkAction small