L-Cysteine Free Base, AJI92

Weight: 200g
Sale price$44.00


L-Cysteine, Free Base, a paramount amino acid revered for its multifaceted applications and exceptional properties. With a formula of C3H7NO2S and a molecular weight of 121.16, this premium-grade compound embodies quality and reliability. Its remarkable melting point of 226-234°C (Dec) underlines its stability and purity. Presenting as a white to off-white powder with an odorless profile, this product exemplifies the highest standards of formulation and production, ensuring efficacy and safety in its usage.

Product Name: L-Cysteine, Free Base
Formula: C3H7NO2S
Molecular Weight: 121.16
Melting Point: 226-234 C (Dec)
Solubility: Soluble in Water
Appearance: White to off-white powder
Odor: Odorless


Specific rotation [α]D20::

+8.3° to + 9.5°


99.0% to 101.0%

Loss on drying:

0.50% max.

Chloride [as Cl-]:

0.04% max.

Ammonium [NH4+]:

0.02% max.

Sulfate [SO42-]:

0.03% max.

Iron [Fe]:

10ppm max.

Heavy metals [Pb]:

10ppm max.

Arsenic [As2O3]:

1ppm max.



Residue on ignition [sulfated]:

0.10% max.

Other amino acids:

Not detectable (Chromatographically)

State of solution:


Clear and colorless

95.0% min.


Key Features:

  • Versatile Applications: L-Cysteine serves as a fundamental building block in various biochemical processes, supporting protein synthesis and cellular health.
  • Melting Point Significance: The high melting point highlights its stability and purity, ensuring optimal performance and efficacy in diverse applications.
  • Solubility in Water: Soluble in water, facilitating convenient incorporation into various formulations and applications.
  • Premium Quality: Our L-Cysteine, Free Base, undergoes stringent quality control measures, guaranteeing purity and reliability.


  1. Food and Beverage Industry: Utilize L-Cysteine as a crucial additive in food processing, aiding in dough conditioning and flavor enhancement.
  2. Cosmetics and Personal Care: Incorporate L-Cysteine for its antioxidant properties, contributing to skincare formulations and hair care products.
  3. Pharmaceuticals: Harness the therapeutic potential of L-Cysteine in pharmaceutical formulations, supporting various health-related applications.

Empower your formulations with the unparalleled versatility and purity of L-Cysteine, Free Base. Elevate your products across industries, ensuring excellence and efficacy in every application.

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