L-Ergothioneine
L-Ergothioneine, CAS No. 497-30-3, is a naturally occurring sulfur-containing histidine derivative with antioxidant properties. It is supplied as a white to off-white powder with an HPLC purity specification of ≥99.5% and an assay of ≥99.0% on a dry basis. The current quality specification includes identity, optical rotation, bulk density, loss on drying, heavy metals, HPLC purity, assay, residual solvent, elemental impurities and microbiological limits.
Description
L-Ergothioneine (Ergothioneine), CAS No. 497-30-3, is a naturally occurring histidine derivative. PubChem describes Ergothioneine as a metabolite produced by certain bacteria and fungi and occurring naturally in various food sources, with antioxidant and chelating properties. Its molecular formula is C9H15N3O2S and its molecular weight is 229.30 g/mol.
The product is supplied as a white to off-white powder. Identity is controlled by chromatographic comparison with the reference standard. The optical rotation specification is ≥+122.0°, bulk density is 0.50–0.80 g/mL, and loss on drying is ≤0.2%.
HPLC purity is specified at ≥99.5%, while assay on a dry basis is ≥99.0%. Residual ethanol, heavy metals, elemental impurities and microbiological limits are also controlled according to the current in-house specification.
Product Description
- Application Field
- Suitable for the development of antioxidant-focused skincare formulations, including serums, creams, lotions and other personal care products. L-Ergothioneine may also be used in research and product development related to nutraceutical applications. Recommended use levels, formulation compatibility and regulatory requirements should be evaluated according to the final product and target market.
- Packaging
- Packaging options are available according to order quantity. Please contact us for available pack sizes and customized packaging requirements.
- Storage Conditions
- Keep tightly sealed, protect from light and store at 2–8°C.
- Shelf Life
- 24-month retest period under the recommended storage conditions. Please refer to the batch COA for the applicable retest date.
Specifications
Test ItemSpecificationAppearanceWhite to off-white powderIdentificationConformsOptical Rotation≥+122.0°Bulk Density0.50–0.80 g/mLLoss on Drying≤0.2%Heavy Metals<10 ppmPurity (HPLC)≥99.5%Assay (on dry basis)≥99.0%Ethanol≤300 ppmLead (Pb)≤0.1 ppmArsenic (As)≤0.1 ppmCadmium (Cd)≤0.1 ppmMercury (Hg)≤0.1 ppmTotal Microbial Count≤1000 CFU/gMolds & Yeasts≤100 CFU/gE. coli & SalmonellaNegativeColiformsNegativeStaphylococcus aureusNegative
