Description

Se-Methylselenocysteine is a key organoselenium compound and a major natural form of selenium found in certain plants, notably garlic and broccoli. This compound is highly valued as a precursor for the synthesis of the critical antioxidant enzyme glutathione peroxidase and as a source of bioavailable selenium for nutritional and research applications. It is essential for manufacturers in the nutraceutical, pharmaceutical, and research biochemical sectors seeking a high-purity, standardized selenium source for supplements, chemoprevention studies, and metabolic research.

Application

• Nutraceutical & Dietary Supplements: A primary ingredient in high-end selenium supplements due to its superior bioavailability and safety profile compared to inorganic forms.
• Pharmaceutical Research: Used as a standard compound in chemoprevention and anticancer research, studying the role of selenium in cellular antioxidant defense and apoptosis.
• Biochemical Standard: Serves as a reference standard in analytical laboratories for the quantification of selenoamino acids in food, tissue, and plasma samples via HPLC or LC-MS.
• Functional Food & Beverage Fortification: Incorporated into specialized nutritional products designed to deliver a precise, bioavailable dose of selenium.
• Animal Nutrition: Used in premium feed additives for livestock and poultry to improve selenium status, supporting immune function and overall health.
• Cosmeceuticals: Potential application in topical formulations for its antioxidant properties, helping to protect skin from oxidative stress.

Basic Information

Product Name	Se-Methylselenocysteine
CAS No.	26046-90-2
Molecular Formula	C4H9NO2Se
Molecular Weight	182.08 g/mol
Synonyms	L-Se-Methylselenocysteine; (2R)-2-Amino-3-(methylselanyl)propanoic acid; Se-Methyl-L-selenocysteine; Methylselenocysteine; MSC; SMSC; Selenomethylselenocysteine; Selenomethionine analog
EINECS	Contact for details

Quality Control

Our Se-Methylselenocysteine is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and assay, chiral analysis to confirm the L-configuration, and heavy metals testing. We provide Certificates of Analysis (COA) with each shipment, detailing all specifications. Production can be aligned with cGMP guidelines for pharmaceutical and nutraceutical applications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C for long-term stability. This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. Keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Optical Rotation	[α]20/D: Specific range provided on COA
Heavy Metals	≤ 10 ppm
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
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.