L-Cysteine base is the free-base form of the sulfur-containing amino acid, chemically (2R)-2-amino-3-sulfanylpropanoic acid (CAS 52-90-4, C3H7NO2S, MW 121.16), carrying a reactive thiol side chain and, by convention, the R configuration. This grade is produced by microbial fermentation, the vegan route, rather than by hydrolysis of keratin from hair or feathers. It is supplied as a crystalline powder standardized to a typical assay of at least 98.5%, and as the free base it carries no chloride counter-ion, unlike the hydrochloride grade. We manufacture it in powder, capsule and tablet formats.
- Powders
- Capsules
- Tablets
Applications
Amino-acid supplements, sports-nutrition powders, capsules and tablets.
Documentation & quality
Every order is backed by the documents your quality team files, and the controls behind them.
Certificate of Analysis
every batchSpecification sheet
on requestAllergen statement
on requestGMO statement
on requestTraceability
on requestSafety Data Sheet
where applicableHow it’s controlled
- Identity verified on every incoming raw material
- Screened for heavy metals and microbial contaminants
- Full batch and lot traceability
- Produced under our certified NSF GMP system