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 derivative and biochemical raw material for pharmaceutical synthesis, cosmetic formulation and biological laboratory research, solving low solubility, unstable oxidation resistance and high impurity content of conventional cystine raw materials.
2. Core Product Categories
Biochemical Amino Acid Derivative, Pharmaceutical Synthetic Intermediate, Cosmetic Functional Raw Material, Laboratory Analytical Reagent
3. Target Crowd
Pharmaceutical synthesis laboratories, cosmetic R&D manufacturers, biochemical testing institutions and amino acid formulation research teams
4. Core Solved Pain Points
· Ordinary L-cystine products feature poor water solubility, limiting homogeneous dispersion in aqueous reaction systems
· Conventional cystine raw materials are prone to oxidative deterioration, causing component failure during storage and reaction
· Low-grade derivatives contain heavy metal and chloride impurities, interfering with high-precision synthesis and testing data
· Common amino acid derivatives have unstable batch purity, reducing repeatability of experimental and production results
5. Core Selling Points
· Maintains 99.2% minimum HPLC purity, effectively reducing impurity interference and ensuring stable data repeatability for synthesis experiments.
· Achieves 120 g/L water solubility at 25°C, greatly improving dispersion uniformity compared with poorly soluble conventional L-cystine.
· Controls heavy metal content below 5 ppm tested by ICP-MS, meeting pharmaceutical and cosmetic grade raw material safety standards.
· Reduces oxidative degradation rate by 40% under normal temperature sealed storage, improving long-term batch stability of raw materials.
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 315.22 g/mol. It appears as white crystalline powder at 25°C with a minimum HPLC purity of 99.2%. Water solubility reaches 120 g/L at 25°C. Heavy metal content is strictly controlled below 5 ppm, and loss on drying is limited below 0.3%. Sealed storage at 2°C to 8°C provides a 24-month valid shelf life with stable chemical properties.
7. Application Scenarios
Pharmaceutical synthesis laboratories use this high-purity derivative as a key intermediate for sulfur-containing drug synthesis and structural modification experiments.
Cosmetic R&D teams apply the water-soluble raw material in keratin repair formulas for stable skin care active ingredient supplementation.
Biochemical testing institutions adopt the reagent for amino acid composition analysis and biological sample detection experiments.
Biological research teams utilize its stable antioxidant properties for cell culture and protein structure stability research.
8. Frequently Asked Questions
Q1: What is the biggest advantage of L-Cystine Dihydrochloride over ordinary L-cystine?
It delivers significantly higher water solubility of 120 g/L at 25°C and stronger oxidation stability, solving the poor dispersion defect of conventional cystine powder.
Q2: What purity level does this dihydrochloride derivative reach?
It has a minimum HPLC purity of 99.2% with ultra-low heavy metal residues below 5 ppm, suitable for high-standard synthesis and formulation research.
Q3: How to store the product to maintain optimal chemical stability?
Seal and store the powder at 2°C to 8°C away from light and humidity, maintaining complete purity and activity within the 24-month shelf life.
Q4: What application fields is this product mainly suitable for?
It applies to pharmaceutical intermediate synthesis, cosmetic keratin-care formula development and high-precision biochemical analytical experiments.
Q5: Will the product produce impurity interference during biochemical experiments?
Strict purification controls drying loss and heavy metal content at low levels, effectively avoiding background interference in detection and synthesis reactions.
Q6: Why does this product have better batch stability than similar derivatives?
Optimized salt-forming process reduces oxidative degradation risk, ensuring consistent purity and chemical properties across different production batches.
