L-Cystine Dihydrochloride (CAS 30925-07-6) Product Introduction
1. Product Overview
L-Cystine Dihydrochloride (CAS 30925-07-6) is a high-purity sulfur-containing amino acid salt compound for pharmaceutical manufacturers and biochemical research laboratories, solving low solubility, high impurity content and unstable optical purity of conventional cystine raw materials.
2. Core Product Categories
Pharmaceutical Amino Acid Intermediate, Biochemical Raw Material, Fine Chemical Compound, Laboratory Analytical Reagent, Cosmetic Functional Raw Material
3. Target Crowd
Pharmaceutical synthesis enterprises, biochemical research institutions, cosmetic raw material processors, food additive factories and chemical testing laboratories
4. Core Solved Pain Points
·Ordinary L-cystine powder features low water solubility, limiting homogeneous reaction in aqueous phase synthesis systems
·Low-grade cystine derivatives have fluctuating optical purity, causing inconsistent experimental and production batch results
·Conventional products contain high heavy metal and residual solvent impurities, failing pharmaceutical-grade application standards
·Common raw materials suffer oxidation and decomposition during storage, leading to reduced effective utilization rate
5. Core Selling Points
·Maintains 99.4% minimum HPLC purity with controlled single impurity below 0.15%, ensuring high stability for pharmaceutical synthesis and precision experiments.
·Reaches 120g/L water solubility at 25°C, significantly improving dissolution efficiency compared with insoluble conventional L-cystine monomers.
·Stabilizes optical rotation value within -22.5° to -24.5°, achieving 99.2% optical purity to guarantee consistent chiral reaction performance.
·Controls heavy metal residue below 1.8 ppm and residual solvent below 0.05%, meeting USP-grade raw material safety standards.
6. Core Product Parameters
This product has a fixed CAS number of 30925-07-6 with a molecular formula of C6H14Cl2N2O4S2 and molecular weight of 313.22 g/mol. It appears as white crystalline powder at 25°C with 99.4% minimum HPLC purity. Water solubility reaches 120 g/L at 25°C. Optical rotation ranges from -22.5° to -24.5°. Heavy metal content is lower than 1.8 ppm, and residual solvent is controlled below 0.05%. Sealed storage at 2°C to 8°C supports a 12-month valid shelf life.
7. Application Scenarios
Pharmaceutical synthesis factories use this high-solubility cystine salt for cystine-class drug intermediate preparation to boost reaction yield.
Biochemical laboratories adopt optically pure L-Cystine Dihydrochloride for chiral synthesis and amino acid metabolism research.
Cosmetic raw material manufacturers apply the low-impurity compound for antioxidant and skin repair formula development.
Food additive enterprises utilize standardized raw materials for nutritional fortifier formulation and food biochemical testing.
8. Frequently Asked Questions
Q1: What is the main advantage of L-Cystine Dihydrochloride over regular L-cystine?
It delivers greatly improved water solubility and stable optical purity, solving poor dissolution and unstable chiral performance of conventional cystine monomers.
Q2: What purity and safety standards does CAS 30925-07-6 meet?
It features 99.4% HPLC purity, ultra-low heavy metal and solvent residues, fully complying with USP-grade pharmaceutical raw material specifications.
Q3: Will long-term storage affect the optical purity of this product?
Professional sealed low-temperature storage maintains stable optical rotation and chemical properties without chiral attenuation within 12 months.
Q4: What application scenarios is this dihydrochloride compound suitable for?
It is widely applied in pharmaceutical intermediate synthesis, chiral biochemical experiments, cosmetic formulas and food nutrition fortification research.
Q5: Does this product contain harmful residual impurities for industrial use?
Residual solvent and heavy metal indicators are strictly controlled within safe ranges, supporting high-standard industrial and laboratory applications.
Q6: Why is optical purity critical for cystine derivative raw materials?
Stable optical purity ensures consistent chiral reaction results, avoiding batch data deviation in drug synthesis and biochemical experiments.
