Description

N,N'-Dibenzoyl-L-Cystine is a high-purity, protected derivative of the amino acid L-cysteine, characterized by its dibenzoylated structure. This compound serves as a critical chiral building block and intermediate in advanced organic synthesis, offering enhanced stability and specific reactivity. It is essential for researchers and manufacturers in the pharmaceutical, peptide synthesis, and fine chemical industries who require precise molecular control for developing active pharmaceutical ingredients (APIs) and complex organic molecules.

Application

• Pharmaceutical Intermediate: Key chiral synthon for the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Peptide Chemistry: Used as a protected cysteine derivative in solid-phase and solution-phase peptide synthesis.
• Biochemical Research: Serves as a standard or reagent in studies involving sulfur-containing amino acids and their derivatives.
• Asymmetric Synthesis: Employed as a starting material or auxiliary in catalytic asymmetric reactions due to its defined stereochemistry.
• Fine Chemical Production: Intermediate in the manufacture of specialty chemicals, ligands, and catalysts.
• Reference Standard: Used as a high-purity analytical standard in quality control laboratories for method development and validation.

Basic Information

Product Name	N,N'-Dibenzoyl-L-Cystine
CAS No.	25129-20-8
Molecular Formula	C20H20N2O6S2
Molecular Weight	448.51 g/mol
Synonyms	L-Cystine, N,N'-dibenzoyl-; Dibenzoyl-L-cystine; N,N'-Dibenzoylcystine; (R,R)-2,2'-Dibenzamido-3,3'-dithiodipropionic Acid; NSC 3347; (2R,2'R)-3,3'-Disulfanediylbis(2-benzamidopropanoic Acid); Benzamide, N,N'-(dithiodi-2,1-ethanediyl)bis[α-oxo-, (R,R)-
EINECS	Contact for details

Quality Control

Our N,N'-Dibenzoyl-L-Cystine is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity, chiral analysis, and identity confirmation (IR, NMR) to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) with batch-specific data are provided to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation [α]	Contact for details
Chiral Purity	≥ 99.0% (L-isomer)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.