Description

L-Alanine Benzyl Ester Benzenesulfonic Acid Salt is a high-purity, protected amino acid derivative essential for advanced organic synthesis. This compound serves as a critical chiral building block, enabling the controlled introduction of the alanine moiety into complex molecular architectures. It is primarily utilized by research institutions and pharmaceutical manufacturers in the development of peptides, peptidomimetics, and other bioactive molecules.

Application

• Peptide Synthesis: A key chiral intermediate for the solid-phase and solution-phase synthesis of custom peptides and peptide libraries.
• Pharmaceutical Research: Used in the research and development of novel active pharmaceutical ingredients (APIs), particularly in oncology and metabolic disease studies.
• Bioconjugation: Acts as a linker or spacer molecule in the development of antibody-drug conjugates (ADCs) and other targeted therapeutics.
• Chemical Biology: Employed in the synthesis of molecular probes and tools for studying enzyme mechanisms and protein-protein interactions.
• Process Chemistry: Serves as a starting material or intermediate in the scalable production of specialty fine chemicals and advanced intermediates.

Basic Information

Product Name	L-Alanine Benzyl Ester Benzenesulfonic Acid Salt
CAS No.	101399-43-3
Molecular Formula	C16H19NO5S
Molecular Weight	337.39 g/mol
Synonyms	L-Alanine benzyl ester p-toluenesulfonate salt; H-Ala-OBzl.TosOH; Benzyl L-alaninate benzenesulfonate; (S)-2-Aminopropanoic acid benzyl ester 4-methylbenzenesulfonate; A481515; Alanine benzyl ester tosylate; L-Alanine benzyl ester tosylate salt; Benzyl (S)-2-aminopropanoate 4-methylbenzenesulfonate
EINECS	Contact for details

Quality Control

Our L-Alanine Benzyl Ester Benzenesulfonic Acid Salt is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification and residual solvent analysis, to ensure it meets the stringent requirements for research and pharmaceutical applications. A Certificate of Analysis (COA) detailing purity, identity, and specific tests is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to maintain stability and purity. Keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Chiral Purity (HPLC)	≥99.0% ee
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.