Description

Dl-Leucine CAS NO 328-39-2 is a synthetic, racemic mixture of the essential amino acid leucine, widely utilized as a versatile building block in organic synthesis and biochemical research. This compound is valued for its role as a chiral intermediate and a key component in the formulation of specialized nutritional and pharmaceutical products. It is a critical raw material for manufacturers in the pharmaceutical, nutraceutical, and fine chemical industries seeking a high-quality, reliable source of this important amino acid.

Application

• Pharmaceutical Intermediates: Serves as a key chiral building block in the synthesis of active pharmaceutical ingredients (APIs) and peptide-based drugs.
• Nutraceutical & Dietary Supplements: Used in the formulation of amino acid blends, sports nutrition products, and specialized enteral/parenteral nutrition solutions.
• Biochemical Research: Employed as a standard or reagent in microbiological media, cell culture studies, and enzymatic research.
• Food & Flavor Industry: Functions as a flavor enhancer and a nutrient fortifier in certain food products and flavoring agents.
• Cosmetic & Personal Care: Incorporated into hair and skin care formulations for its conditioning and moisturizing properties.
• Organic Synthesis: Acts as a versatile starting material or intermediate in asymmetric synthesis and the production of fine chemicals.

Basic Information

Product Name	Dl-Leucine
CAS No.	328-39-2
Molecular Formula	C6H13NO2
Molecular Weight	131.17 g/mol
Synonyms	DL-2-Amino-4-methylpentanoic acid; (±)-Leucine; rac-Leucine; 2-Amino-4-methylvaleric acid; H-DL-Leu-OH; NSC 9251; Leucine, DL-; 4-Methyl-2-aminopentanoic acid
EINECS	206-328-2

Quality Control

Our Dl-Leucine is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for pharmaceutical and nutritional applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee traceability and consistency.

Storage

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

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Optical Rotation	± 0.2° (c=1 in H2O)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.0%

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