Description

Poly-L-Methionine CAS NO 26062-47-5 is the high-purity, polymeric form of the essential sulfur-containing amino acid L-methionine. This specialized compound is critical for applications requiring controlled release, enhanced stability, or specific chiral properties not offered by the monomeric form. It serves as a vital raw material and intermediate for the pharmaceutical, nutraceutical, and advanced biochemical research sectors, where precise molecular structure and consistent quality are paramount for product efficacy and regulatory compliance.

Application

• Pharmaceutical Intermediates: Used in the synthesis of peptide-based drugs, prodrugs, and controlled-release formulations where the polymeric backbone modifies pharmacokinetics.
• Nutraceutical & Dietary Supplements: Serves as a specialized source of bioavailable sulfur and methyl groups in advanced supplement matrices designed for sustained nutrient delivery.
• Biochemical Research: Essential reagent in enzymology studies, protein structure-function research, and as a substrate or inhibitor in metabolic pathway investigations.
• Cell Culture Media: A component in specialized, serum-free media formulations for mammalian cell culture, particularly in biopharmaceutical production.
• Cosmetic & Personal Care: Incorporated into high-end skincare formulations for its potential antioxidant properties and role in keratin synthesis.
• Animal Feed Additives: Used in premium aquaculture and livestock nutrition for specialized feed applications requiring tailored amino acid profiles.

Basic Information

Product Name	Poly-L-Methionine
CAS No.	26062-47-5
Molecular Formula	(C5H11NO2S)n
Molecular Weight	n * 149.21 g/mol
Synonyms	Poly(L-methionine); L-Methionine Homopolymer; Methionine Polymer; Poly(methionine); P-Met; PLM; Poly(Met); Poly-L-Met
EINECS	Contact for details

Quality Control

Our Poly-L-Methionine is manufactured under strict quality management systems. Each batch is subjected to comprehensive analytical testing, including but not limited to identification, assay (purity), degree of polymerization analysis, and specific impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to ensure full traceability and compliance with your quality requirements.

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 material is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to air, moisture, or light should be avoided to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0% (as L-Methionine units)
Specific Rotation	Contact for details
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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