30120

L-Cysteine hydrochloride

≥99.0% (RT)

• Synonym(s): L-Cysteine hydrochloride (1:1)
• Linear Formula: HSCH₂CH(NH₂)COOH · HCl
• CAS Number: 52-89-1
• Molecular Weight: 157.62
• Beilstein/REAXYS Number: 3560277
• EC Number: 200-157-7
• MDL number: MFCD00064553
• UNSPSC Code: 12352209
• PubChem Substance ID: 329753437
• NACRES: NA.77

Properties

• Product Name: L-Cysteine hydrochloride, anhydrous, ≥99.0% (RT)
• Quality Level: 200
• assay: ≥99.0% (RT)
• form: powder or crystals
• optical activity: [α]20/D +6.4±0.3°, c = 5% in 5 M HCl
• impurities: ≤0.5% foreign amino acids
• ign. residue: ≤0.1% (as SO₄)
• loss: ≤1.0% loss on drying
• color: white
• mp: 174.1-174.7 °C
• solubility: H₂O: 1 g/10 mL, clear, colorless
• anion traces: sulfate (SO₄^2-): ≤100 mg/kg
• cation traces: Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤50 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; NH₄⁺: ≤500 mg/kg; Na: ≤50 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg
• application(s): peptide synthesis
• SMILES string: Cl[H].N[C@@H](CS)C(O)=O
• InChI: 1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1
• InChI key: IFQSXNOEEPCSLW-DKWTVANSSA-N

Description

Application

• Drug delivery systems: A study utilized L-Cysteine HCl in the formulation of mixed micelles for the enhanced delivery of carvedilol, a cardiovascular drug, illustrating its utility in improving solubility and bioavailability of pharmaceutical compounds (Öztürk et al., 2022).

Biochem/physiol Actions

NMDA glutamatergic receptor agonist that is also an agonist at AMPA glutamatergic receptors at high concentrations.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves