Description

D-(-)-Asparagine Monohydrate is the D-enantiomer of the amino acid asparagine, provided as a monohydrate crystalline powder. This non-proteinogenic amino acid is a critical chiral building block and biochemical reagent for advanced research and synthesis. It is essential for industries requiring high-purity, stereochemically defined compounds for pharmaceutical development, nutritional studies, and microbiological media formulation.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and synthesis of active pharmaceutical ingredients (APIs), peptides, and enantiomerically pure drugs.
• Biochemical Research: Used as a defined component in cell culture media, enzyme studies, and metabolic pathway analysis to investigate D-amino acid functions.
• Nutritional Science: Employed in studies on amino acid metabolism, dietary requirements, and the specific biological roles of D-amino acids.
• Microbiology: Serves as a selective nutrient in microbial growth media for the cultivation and study of specific bacterial strains.
• Reference Standard: Utilized as a high-purity analytical standard in HPLC, LC-MS, and other chromatographic methods for quality control and method validation.
• Cosmetic Ingredient: Potential use in advanced skincare formulations as a moisturizing agent or a precursor for bioactive compounds.

Basic Information

Product Name	D-(-)-Asparagine Monohydrate
CAS No.	2058-58-4
Molecular Formula	C₄H₈N₂O₃ · H₂O
Molecular Weight	150.13 g/mol (Anhydrous basis: 132.12 g/mol)
Synonyms	D-Asparagine Monohydrate; (R)-2-Aminosuccinamic Acid Monohydrate; (2R)-2-Amino-3-carbamoylpropanoic Acid Monohydrate; D-(-)-α-Aminosuccinamic Acid Monohydrate; H-D-Asn-OH · H₂O; D-Asparagine Hydrate
EINECS	218-147-1

Quality Control

Our D-(-)-Asparagine Monohydrate is manufactured under a strict quality management system. Each batch is subjected to comprehensive analytical testing, including chiral purity verification by HPLC, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing specific results for identity, purity, and related substances is provided with every shipment.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0% (on anhydrous basis)
Chiral Purity (HPLC)	≥99.0% D-Isomer
Water Content (KF)	10.0% - 13.0%
Specific Rotation	-5.0° to -7.0° (c=2 in H₂O)
Heavy Metals (as Pb)	≤10 ppm
Residue on Ignition	≤0.1%

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