Description

D,L-Aspartic Acid Dibenzyl Ester-p-Toluenesulfonate is a protected amino acid derivative primarily used as a key chiral building block and intermediate in advanced organic synthesis. This compound is critical for researchers and manufacturers requiring high-purity precursors for the development of pharmaceuticals, peptides, and fine chemicals. It is essential for synthetic chemists in pharmaceutical R&D, agrochemical production, and academic institutions focused on peptide chemistry and medicinal chemistry.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of peptide-based drugs, enzyme inhibitors, and other bioactive molecules.
• Peptide Synthesis: Used in solid-phase and solution-phase peptide synthesis (SPPS) where the dibenzyl ester protecting groups offer orthogonal deprotection strategies.
• Chiral Auxiliary & Resolving Agent: Employed in asymmetric synthesis and for the resolution of racemic mixtures due to its chiral centers.
• Agrochemical Research: Serves as a building block for developing novel herbicides, pesticides, and plant growth regulators with specific stereochemistry.
• Bioconjugation & Linker Chemistry: Utilized in the design of drug conjugates, probes, and materials where a protected aspartic acid moiety is required.
• Academic & R&D Laboratories: A valuable reagent for methodological development in organic chemistry and for studying reaction mechanisms.

Basic Information

Product Name	D,L-Aspartic Acid Dibenzyl Ester-p-Toluenesulfonate
CAS No.	4079-62-3
Molecular Formula	C25H27NO7S
Molecular Weight	485.55 g/mol
Synonyms	D,L-Aspartic Acid Dibenzyl Ester Tosylate; Aspartic Acid Dibenzyl Ester p-Toluenesulfonate Salt; Benzyl (2S)-2-[(4-methylphenyl)sulfonylamino]butanedioate; Dibenzyl DL-aspartate p-toluenesulfonate; DL-Aspartic acid dibenzyl ester tosylate salt; Aspartic acid, dibenzyl ester, 4-methylbenzenesulfonate; 4079-62-3
EINECS	Contact for details

Quality Control

Our D,L-Aspartic Acid Dibenzyl Ester-p-Toluenesulfonate 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 synthetic applications. Certificates of Analysis (COA) detailing all specifications are provided and available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity	Contact for details
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
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.