Verified — all release criteria met
released
Certificate of analysis
Glutathione (Reduced)
Lot CP-GLUTATHJ-2605B · 1500 mg
98.22 %
HPLC purity
Spec ≥ 98.0 %
90.9 %
Net peptide content
By amino acid analysis
< 0.19
Endotoxin (EU/mg)
Spec < 5.0 EU/mg
Provenance
- Testing laboratory
- Janoshik Analytical
- Accreditation
- ISO/IEC 17025:2017
- Country of synthesis
- United States
- Manufactured
- May 13, 2026
- Release tested
- May 22, 2026 (4 months ago)
- Retest date
- May 12, 2028
- CAS number
- 70-18-8
- Molecular formula
- C10H17N3O6S
- Theoretical mass
- 307.32 Da
- Observed mass (LC-MS)
- 307.44 Da (Δ 0.12 Da)
Assay results
Every line the release panel ran for this lot, with the method, the acceptance criterion and the measured value — not a pass mark alone.
| Method | Parameter | Specification | Result | |
|---|---|---|---|---|
| RP-HPLC (UV 214 nm) | Purity (area %) | ≥ 98.0 % | 98.22 % | Pass |
| LC-MS (ESI+) | Identity — observed mass | 307.32 ± 1.0 Da | 307.44 Da | Pass |
| Amino acid analysis | Net peptide content | ≥ 80.0 % | 90.9 % | Pass |
| Karl Fischer | Water content | ≤ 8.0 % | 3.18 % | Pass |
| Ion chromatography | Residual TFA | ≤ 1.0 % | 0.29 % | Pass |
| LAL kinetic chromogenic | Bacterial endotoxin | < 5.0 EU/mg | < 0.19 EU/mg | Pass |
| USP <71> membrane filtration | Sterility | No growth | No growth | Pass |
| Visual / USP <790> | Appearance | White to off-white cake, free of visible particulates | Conforms | Pass |
| DTNB / Ellman assay | Reduced : oxidised ratio (GSH:GSSG) | ≥ 98 : 2 | 99.7 : 0.3 | Pass |
Sequence
H-γGlu-Cys-Gly-OH
Handling for this lot
- Appearance
- White crystalline lyophilised powder
- Storage
- -20 °C under inert gas. Oxidises on air exposure.
- Reconstitution
- Prepare fresh and use immediately. Degassed diluent measurably slows oxidation if you must hold the solution.
Other lots of Glutathione (Reduced)
Compare batch to batch. Consistency across lots is a stronger signal than any single certificate.
Research use only. This certificate describes material supplied strictly for laboratory research. It is not a drug, food, cosmetic or medical device, has not been evaluated by the FDA, and is not intended for human or veterinary administration of any kind.