Product Name : L-Cysteine Hydrochloride
Other Names: L-Cisteine·hydrochloride;L-Cysteine·hydrochloric acid;L-Cysteine hydrochlo;L-Cysteine hydrochloride anhydrous
CAS number : 52-89-1
Molecular formula: C3H8ClNO2S

Appearance/Color : White powder

Applications ：Cosmetics, medicine, food

In clinical nutrition L-Cysteine is used as an antioxidant agent. In the food industry it is used as an antioxidant for natural fruit juice products. It may also be used as an additive to amino acid injections to meet essential nutritional requirements in intravenous total parenteral nutrition.

It can be taken any time of day that is most convenient. NAC is available in 500-, 600-, 750- and and 1,000-milligram tablets. You will likely need to divide up your dose and take it twice or three times daily to see results, so consider taking it once it in the morning and again at night.

Chemical and Biological Properties

L-Cysteine is a semi-essential amino acid, meaning it can be synthesized by the body but under certain conditions, such as illness or stress, its production may be insufficient, necessitating dietary intake. L-Cysteine is crucial for the synthesis of proteins and the production of glutathione, an important antioxidant in the body.

Industrial and Food Applications

1. Food Industry: L-Cysteine hydrochloride is widely used as a food additive, primarily as a dough conditioner and flavor enhancer. It helps improve the texture of baked goods by breaking down gluten and enhancing dough elasticity. Additionally, it acts as a reducing agent, which helps maintain the stability and quality of food products during storage.
2. Cosmetics: In the cosmetic industry, L-Cysteine hydrochloride is utilized in hair care products. It contributes to hair strength and texture by promoting the formation of disulfide bonds within the hair shaft, which are essential for hair structure and integrity.
3. Pharmaceuticals: L-Cysteine hydrochloride is also used in pharmaceutical formulations. It can act as a stabilizer for certain drugs, ensuring their potency and efficacy over time.

Health Benefits and Medical Uses

1. Antioxidant Properties: As a precursor to glutathione, L-Cysteine hydrochloride plays a crucial role in cellular antioxidant defenses. Glutathione helps neutralize free radicals and detoxify harmful substances in the body, contributing to overall health and disease prevention.
2. Detoxification Support: L-Cysteine is involved in the detoxification of heavy metals and other toxic substances by binding to them and facilitating their removal from the body.
3. Treatment for Certain Medical Conditions: In medicine, L-Cysteine hydrochloride may be used as a treatment adjunct in conditions where cysteine deficiency or oxidative stress plays a role, such as in certain liver diseases or chronic conditions associated with oxidative damage.

Safety Considerations

• Generally Recognized as Safe (GRAS): L-Cysteine hydrochloride is considered safe for consumption when used in accordance with regulatory guidelines. It has been extensively studied and is widely used in food and pharmaceutical industries.
• Allergic Reactions: While rare, allergic reactions to L-Cysteine hydrochloride can occur, particularly in individuals with sensitivities to sulfur-containing compounds.