Description

4-Ethyl Hydrogen L-Aspartate is a high-purity, non-natural amino acid derivative of L-aspartic acid. This compound is valued for its role as a versatile chiral building block and intermediate in advanced organic synthesis and pharmaceutical research. It is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for developing novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel APIs, peptides, and prodrugs.
• Biochemical Research: Used in enzymatic studies and as a precursor for synthesizing modified amino acids and peptides.
• Agrochemical Synthesis: Serves as a building block for creating advanced, optically active crop protection agents and herbicides.
• Fine Chemical Production: Employed in the synthesis of specialty chemicals, flavors, and fragrances requiring specific stereochemistry.
• Cosmetic Ingredient Synthesis: A potential intermediate for manufacturing certain skin-conditioning and anti-aging agents.

Basic Information

Product Name	4-Ethyl Hydrogen L-Aspartate
CAS No.	4070-43-3
Molecular Formula	C6H11NO4
Molecular Weight	161.16 g/mol
Synonyms	L-Aspartic acid, 4-ethyl ester; (S)-4-Ethoxy-4-oxobutanoic acid; 4-Ethyl L-aspartate; Ethyl hydrogen L-aspartate; H-Asp(OEt)-OH; Aspartic acid β-ethyl ester; L-4-Ethoxy-4-oxobutanoate
EINECS	Contact for details

Quality Control

Our 4-Ethyl Hydrogen L-Aspartate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification, to ensure it meets the high standards required for research and synthesis. A detailed Certificate of Analysis (COA) documenting identity, purity, and specific impurities is provided with every shipment.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% (L-Isomer)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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