Ergothioneine (CAS 497-30-3)

Application and positioning

A sulfur-containing histidine derivative and a potent scavenger of hydroxyl radicals and singlet oxygen. It is fermentation-derived; cosmetic grade is specified on assay and on the absence of the desulfurated impurity. Laurand supplies it from audited Chinese producers in kilogram to multi-hundred-kilogram lots, with the purity and microbiological documentation cosmetic formulators require.

Quality and documentation

• Batch-specific Certificate of Analysis with assay by HPLC or titration and the relevant impurity profile
• Heavy metals (Pb, As, Hg, Cd) and microbial limits to the specification agreed for cosmetic grade
• INCI name and CAS on the COA, to support your own product notification file
• Appearance, colour and odour described against a retained reference standard
• SDS in the language of your market, with GHS classification for the destination

Packaging and handling

• 1 kg, 5 kg and 25 kg fibre drums with inner PE liner; smaller pack sizes in PE bottles
• Sealed and dry; products that are heat-sensitive are shipped with the appropriate temperature control
• Store in a dry, dark warehouse below 30 °C, away from strong oxidising agents

Related products

• D-Panthenol (CAS 81-13-0)
• Sodium Hyaluronate (CAS 9067-32-7)
• Allantoin (CAS 97-59-6)
• Betaine (CAS 107-43-7)

Values marked (predicted) are calculated estimates; the rest are published literature or supplier data. Where a property has no published value we leave it blank rather than estimate it. The specification of the delivered lot is confirmed with the quotation.