Research-grade specs Sequence: Glu-Cys-Gly (-glutamyl bond) Length: 3 amino acids Redox states: Cycles between GSH (reduced) and GSSG (oxidised disulfide) Vial size: 10 mL / 1500 mg Format: Lyophilized powder Studied applications Redox-state measurement and oxidative stress assays (GSH:GSSG ratio) Glutathione-S-transferase and Phase II enzyme research Mitochondrial-function research Analytical method development biosensor and mass-spectrometry quantification Reference-standard use in assay validation Quality & trust 99% HPLC purity, third-party tested Mass spectrometry identity confirmation LAL endotoxin testing on every batch Batch-specific Certificate of Analysis included COA shown in the product gallery cGMP manufactured in Dallas, Texas (USA) USA same-day shipping (orders before 2pm CT M-F) Free domestic shipping on orders over $200 Storage & handling Store refrigerated at 28C, protected from light and air Glutathione oxidises readily on exposure to air reseal promptly and use reconstituted material within a short window Reconstitute with bacteriostatic water for laboratory preparation Follow your laboratorys standard handling and disposal protocol Related research: NAD+ 5-Amino-1MQ GHK-Cu All research vials Certificates of Analysis Bulk & Wholesale Pricing Frequently Asked Questions Do I need a coupon code for bulk discounts

Glutathione is a tripeptide found in most mammalian tissues
Enzymatic Antioxidants Enzymatic antioxidants function by converting oxidized metabolic products in a multi-step process to hydrogen peroxide and then to water using cofactors such as iron, zinc, copper, and manganese

GHK-Cu (copper peptides) GHK-Cu special considerations: Contains copper = oxidation concern More sensitive than most peptides Color changes indicate degradation Shelf life: Lyophilized frozen: 1-2 years (shorter than most) Lyophilized refrigerated: 6-12 months Reconstituted: 21-28 days (some say 21 days safer) Color monitoring: Fresh GHK-Cu: Light blue or clear with blue tint Acceptable: Maintained blue color Degrading: Deepening blue or turning brown/green Bad: Brown, green, or black = severely degraded Storage best practices: Freeze powder (very important for GHK-Cu) Protect from light religiously (amber vials ideal) Reconstitute smaller amounts (2-3 weeks vs 4 weeks) Monitor color weekly Discard if color darkens significantly See our GHK-Cu 50mg copper peptide dosage , copper peptides GHK-Cu guide , and should copper peptides be refrigerated
Alternative Therapies May/Jun 2021 Vol