L-Cysteine HCl Monohydrate

L-Cysteine HCl Monohydrate

Chemical Name:H-Cys-OH.HCl.H2O

Molecular Formula:C3H7NO2S·HCL·H2O

Molecular Weight:175.63

Cas No: [7048-04-6]

Appearance:White crystalline powder; tasteless, easily soluble in water but insoluble in alcohol and ether

Quality Standards:AJI92

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Product Details

L-cysteine HCL monohydrate (commonly known as cysteine) is an amino acid the body uses to make proteins. Although it is produced naturally, most cysteine comes from dietary sources. Cysteine is one of the main building blocks of glutathione, a powerful antioxidant the body produces to fight off free radicals and prevent cellular damage. Without enough dietary cysteine, glutathione levels drop (x).

In addition to its antioxidant boosting effects, research shows that cysteine may have a number of other health benefits. Studies suggest that it may reduce inflammation and improve digestion (x). Cysteine may also be able to improve immune function in patients with conditions such as HIV by stimulating infection-fighting cells in the body.

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White crystalline powder; tasteless, easily soluble in water but insoluble in alcohol and ether

Quality Standards:


L-Cysteine HCl Monohydrate


Specifications (AJI97 )


White crystalline powder

Assay, % 98.5~100.5

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Other amino acid

Chromatographically not detd

The Characteristics and Uses:

  L-Cysteine hcl monohydrate is one of the important products the amino acid series. It is widely used in medical, chemical and food industries.   
  Used for biochemical reagent, foodstuff additive, antioxidant, antiseptics and cold permanent waving of hair, etc.

Package and Transport:

This product is contained in a double-layer package, the inner layer being a sealed nonpoisonous polyethylene bag or alumin, and the outer layer being a paper board barrel. Each barrel contains a net weight of 25kg. Packages may be arranged in accordance with customer’s requirements.

Handle with care. Protect the product from sunshine or rain. Do not transport them together with poisonous or harmful goods. This product belongs to the non-dangerous category and can be transported as a general chemical product.


Stored in dry, clean and ventilated places. In order to avoid pollution, it is prohibited to place this product together with poisonous or harmful substances. The expiry date is for two years.

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