L-Cysteine Hydrochloride Monohydrate, 99.0-100.5% USP
R)-2-Amino-3-mercaptopropanoic Acid Hydrochloride; (R)-Cysteine Hydrochloride; 2-Amino-3-mercaptopropionic Acid Hydrochloride; NSC 8746 Hydrochloride; Thioserine Hydrochloride; β-Mercaptoalanine Hydrochloride
L-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. L-Cysteine is commonly used as a precursor in the food and pharmaceutical industries. L-Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavors.
Purity (Titration: anhydrous basis)
99.0-100.5%
Form
White cyrstalline powder
Solubility
Methanol, Water
Optical Rotation ([a]D20)
+5.5 to +7.0º
Heavy Metals: ≤ 0.001% Arsenic (As2O2): ≤ 0.0001% Chloride (Cl-): 19.89-20.29% Sulfate (SO4): ≤ 0.02% Ammonium (NH4): ≤ 0.002% Iron (Fe): ≤ 0.001%
Infrared Spectrum: Conforms to structure Transmission: ≥ 98.0% Loss on Drying (USP23): 8-12% Organic Volatile Impurities (USP23): Conforms Other Amino Acids: None Detected Residue On Ignition: ≤ 0.1%
