Four Distinct Phases of Precision Chemistry
Every batch follows this rigorous calendar before being cleared for scientific distribution.
Solid-Phase Peptide Synthesis (SPPS) & Preparative Cleavage
Sequential amino acid coupling is carried out using advanced automated microwave-assisted Fmoc-SPPS chemistry on high-loading Wang or Rink amide resins. After full elongation, a scavenger cocktail (TFA / TIS / EDT / H2O) is applied for gentle deprotection of reactive side-chains, yielding crude peptide chains with maximized target fidelity.
Preparative RP-HPLC Fractionation & Deep Lyophilization
Crude peptide is isolated via preparative High-Performance Liquid Chromatography (50mm–100mm dynamic axial compression columns). Only central elution fractions meeting >99% purity are collected. The purified peptide then undergoes a 72-hour dual-stage lyophilization cycle (freeze-drying at -50°C under 0.05 mbar vacuum) to drive residual moisture below 2.0%.
Blind Third-Party Analytical Auditing (External Laboratories)
Randomized sample vials are pulled from the freeze-drying chamber, anonymized with blind serial codes, and dispatched via priority courier to accredited testing laboratories (Janoshik Analytical and Colmaric). Full analytical runs are conducted: Analytical RP-HPLC for area purity percentage, ESI-MS for molecular mass, and kinetic chromogenic LAL for endotoxin count.
Inert Nitrogen Sealing, Quarantine Review & Release
Upon receiving passing COA reports, the batch vials are backfilled with ultra-high purity dry nitrogen gas, hermetically sealed with chlorobutyl rubber stoppers, and crimped with tamper-evident aluminum seals. The finished batch is held in climate-monitored sub-zero cold-storage (-20°C) until authorized for domestic USA shipping.
Net Peptide Weight Accuracy
We account for counterions and hydrate salts to provide realistic milligram quantities, so researchers avoid erroneous dilution calculations.
Full Batch Traceability
Each vial carries a distinct laser-printed lot code directly referencing our online analytical database for seamless record keeping.
Zero Compromise Formulation
No fillers, mystery buffers, or uncharacterized stabilizing agents. Pure lyophilized peptide compounds for precise laboratory investigation.
Order Reagents Backed by the 18-Day Standard
Same-day dispatch from our domestic USA distribution center on orders placed before 2 PM EST.