Description

L-Alanine Benzyl Ester 4-Toluenesulfonate is a protected amino acid derivative, specifically the benzyl ester tosylate salt of L-alanine. This compound is a crucial chiral building block in organic synthesis, valued for its role in introducing the alanine moiety while protecting the carboxylic acid functionality. It is primarily utilized by researchers and manufacturers in the pharmaceutical and fine chemical industries for the synthesis of peptides, peptidomimetics, and other bioactive molecules.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and production of active pharmaceutical ingredients (APIs), particularly peptide-based drugs.
• Peptide Synthesis: Used in solid-phase and solution-phase peptide synthesis (SPPS) as a protected amino acid building block.
• Proteomics Research: Serves as a reagent in biochemical research for studying protein structure, function, and enzyme mechanisms.
• Fine Chemical Synthesis: Employed in the asymmetric synthesis of complex organic molecules, including natural products and catalysts.
• Agrochemical Development: Can be utilized in the synthesis of chiral herbicides, fungicides, or plant growth regulators.
• Academic & R&D: A standard reagent in university and corporate laboratories for methodological development in organic chemistry.

Basic Information

Product Name	L-Alanine Benzyl Ester 4-Toluenesulfonate
CAS No.	42854-62-6
Molecular Formula	C17H21NO5S
Molecular Weight	351.42 g/mol
Synonyms	L-Alanine benzyl ester p-toluenesulfonate salt; (S)-2-Aminopropanoic acid benzyl ester 4-methylbenzenesulfonate; Benzyl L-alaninate 4-toluenesulfonate; H-Ala-OBzl.TosOH; Alanine benzyl ester tosylate; L-2-Aminopropionic acid benzyl ester p-toluenesulfonic acid salt; Benzyl (S)-2-aminopropanoate 4-methylbenzenesulfonate
EINECS	Contact for details

Quality Control

Our L-Alanine Benzyl Ester 4-Toluenesulfonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high chemical purity, chiral integrity, and consistency. Certificates of Analysis (COA) detailing purity, specific rotation, and impurity profiles are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Specific Rotation	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Chiral Purity (HPLC)	≥ 99.0% ee

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