Description

L-Isoleucine CAS NO 73-32-5 is an essential branched-chain amino acid (BCAA) critical for protein synthesis, muscle metabolism, and energy regulation. Its high purity and consistent quality make it a vital raw material for manufacturers requiring reliable and compliant ingredients. This product is primarily utilized by the pharmaceutical, nutraceutical, and food & beverage industries for applications ranging from parenteral nutrition to sports supplements and dietary fortification.

Application

• Pharmaceutical Formulations: A key component in amino acid infusion solutions for parenteral and enteral nutrition, and in active pharmaceutical ingredients (APIs).
• Dietary Supplements & Sports Nutrition: Essential ingredient in BCAA blends, protein powders, and capsules aimed at supporting muscle recovery and protein synthesis.
• Food & Beverage Fortification: Used to enhance the nutritional profile of functional foods, medical foods, and specialized dietary products.
• Cell Culture Media: Serves as a necessary nutrient in microbiological media and biopharmaceutical fermentation processes.
• Animal Feed Additives: Incorporated into premium feed formulations to optimize growth and health in livestock and aquaculture.
• Biochemical Research: Used as a standard and reagent in life science research and diagnostic applications.

Basic Information

Product Name	L-Isoleucine
CAS No.	73-32-5
Molecular Formula	C6H13NO2
Molecular Weight	131.17 g/mol
Synonyms	(2S,3S)-2-Amino-3-methylpentanoic acid; (S)-Isoleucine; ILE; Iso; L-2-Amino-3-methylvaleric acid; (2S,3S)-Isoleucine; L-α-Amino-β-methylvaleric acid
EINECS	200-798-2

Quality Control

Our L-Isoleucine is manufactured under strict quality management systems. It is tested to meet high-purity standards suitable for pharmaceutical and food-grade applications, including compliance with USP, EP, and FCC monographs where applicable. Each batch is supported by a comprehensive Certificate of Analysis (COA) to ensure traceability and specification compliance.

Storage

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

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	98.5% ~ 101.5%
Specific Rotation [α]20/D	+39.0° ~ +41.5°
Loss on Drying	≤ 0.5%
Residue on Ignition (Sulfated Ash)	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 0.5%
Chloride (Cl)	≤ 0.02%
Sulfate (SO4)	≤ 0.02%

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