Description

Tos-Met-Oh CAS NO 21957-62-0 is a high-purity chemical intermediate, specifically the tosyl derivative of a methionine analog. This compound is valued for its role as a versatile building block in sophisticated organic synthesis, particularly in peptide chemistry and pharmaceutical research. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced material science sectors who require reliable, high-quality precursors for developing new active compounds.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel peptide-based drugs and therapeutic agents.
• Peptide Chemistry: Used in solid-phase and solution-phase peptide synthesis to introduce protected methionine-like motifs.
• Agrochemical Research: Serves as a precursor in the development of new crop protection agents and herbicides.
• Bioconjugation: Utilized in linking molecules to proteins or other biomolecules for diagnostic and research applications.
• Material Science: Acts as a monomer or modifying agent in the synthesis of specialized polymers and functional materials.
• Chemical Biology Probes: Integral for creating labeled compounds and probes used to study biological pathways and mechanisms.

Basic Information

Product Name	Tos-Met-Oh
CAS No.	21957-62-0
Molecular Formula	C12H17NO5S
Molecular Weight	287.33 g/mol
Synonyms	N-[(4-Methylphenyl)sulfonyl]-L-methionine; L-Methionine, N-[(4-methylphenyl)sulfonyl]-; Tosyl-L-methionine; N-Tosyl-L-methionine; N-(p-Toluenesulfonyl)-L-methionine; N-Tosylmethionine; (2S)-2-[(4-Methylphenyl)sulfonylamino]-4-(methylsulfanyl)butanoic acid; p-Toluenesulfonylmethionine
EINECS	Contact for details

Quality Control

Our Tos-Met-Oh is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and production. Certificates of Analysis (COA) documenting full specifications are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep the container sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation	Specific range available on COA
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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