Description

Seleno-Dl-Methionine CAS NO 2578-28-1 is an organoselenium compound, a synthetic analog of the essential amino acid methionine where sulfur is replaced by selenium. This substitution is critical for its role as a highly bioavailable source of selenium, a vital trace element for numerous biological functions. It is primarily utilized in the formulation of nutritional supplements, animal feed premixes, and advanced biochemical research.

Application

• Nutritional Supplements & Fortification: A key ingredient in human dietary supplements, multivitamins, and functional foods to provide a safe, organic source of selenium for antioxidant support and immune system function.
• Animal Feed & Veterinary Nutrition: Incorporated into premixes for livestock, poultry, and aquaculture to prevent selenium deficiency, improve growth performance, and enhance reproductive health.
• Pharmaceutical Intermediates: Serves as a crucial building block or active ingredient in the synthesis of specialized pharmaceutical compounds and investigational drugs.
• Biochemical & Life Science Research: Used as a standard or reagent in metabolic studies, enzymatic research, and investigations into selenium's role in cellular redox processes and cancer prevention.
• Cell Culture Media: Employed as a component of specialized cell culture media formulations to support the growth of certain cell lines under defined conditions.

Basic Information

Product Name	Seleno-Dl-Methionine
CAS No.	2578-28-1
Molecular Formula	C5H11NO2Se
Molecular Weight	196.11 g/mol
Synonyms	DL-Selenomethionine; Seleno-DL-Methionine; (±)-Selenomethionine; 2-Amino-4-(methylseleno)butanoic acid; Selenium methionine; Se-Met; L-Selenomethionine (isomer); Selenomethionine, DL-
EINECS	219-919-7

Quality Control

Our Seleno-Dl-Methionine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and potency, meeting specifications suitable for nutritional and research applications. A Certificate of Analysis (COA) detailing results for assay, heavy metals, residual solvents, 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); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Selenium Content	40.0 - 41.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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