HELIX BioScience

Certificate of Analysis
Helix Reagents LLC

Orlando, FL
US · getpeptides.com
SPECIMEN — ILLUSTRATIVE FORMAT. This certificate shows the COA layout for this compound. Lot number, dates, and measured results (shown as “____”) are completed on the certificate issued with each shipped lot.

Product Identification

ProductGlutathione (HXR-GLUTATHIONE)
Full nameGlutathione, reduced (GSH; gamma-glutamyl-cysteinyl-glycine tripeptide)
CAS No.70-18-8
Molecular formulaC₁₀H₁₇N₃O₆S
Molecular weight307.32 g/mol
AppearanceWhite lyophilized powder
Lot No.____
Manufacture date____
Re-test date____
Quantity1000 mg

Analytical Results

TestMethodSpecificationResult
PurityRP-HPLC≥98% (HPLC)____
IdentityESI-MSConsistent with MW____
AppearanceVisualWhite powder____
SolubilityVisualSoluble in water / AcOH____
Water contentKarl Fischer≤ spec____
Counterion (acetate / TFA)HPLCReport____

Analytical Spectra

RP-HPLC Chromatogram
Absorbance (220 nm) Retention Time (min) Glutathione
Column: C18, 4.6×150mm · Mobile phase: ACN/H₂O (0.1% TFA) · Flow: 1.0 mL/min
ESI Mass Spectrum
Relative Abundance m/z [M+3H]³⁺ [M+4H]⁴⁺ [M+5H]⁵⁺ calc. calc.
Ionization: ESI+ · Mass range: 200–2000 m/z · Deconvoluted MW consistent with theoretical
Sequenceγ-Glu-Cys-Gly (gamma-glutamyl-cysteinyl-glycine; non-standard γ-glutamyl N-terminal linkage — distinct from the oxidized dimer GSSG, CAS 27025-41-8)

Storage & Handling

Store at −20°C, desiccated, protect from light. Minimize freeze–thaw cycles. Reconstitute under aseptic laboratory conditions.
Reviewed / Approved by ____________________ (QC)
Date ____________________
RESEARCH USE ONLY
Not for human or veterinary use, food, drug, or therapeutic application.
Helix Reagents LLC · getpeptides.com ·
HXR-GLUTATHIONE This certificate is valid only for the lot identified above.