Bulk Peptide Supply
QSC (Qingdao Sigma Chemical) supplies research peptides in bulk quantities directly from the manufacturer. All compounds are available as lyophilised powder at ≥99% HPLC purity with Janoshik COA. Standard order sizes are available through qsc-usa.com with no minimum order quantity. Institutional bulk volumes can be discussed directly with QSC.
Order Bulk Peptides from QSC
≥99% HPLC. Janoshik COA. 8-region domestic. Direct manufacturer pricing.
Order at QSC →Top Demand Bulk Compounds
| Compound | CAS | Category | Form | Min Order | Purity |
|---|---|---|---|---|---|
| Semaglutide | 910463-68-2 | GLP-1 | Lyoph. powder | No minimum | ≥99% HPLC |
| Tirzepatide | 2023788-19-2 | GLP-1/GIP dual | Lyoph. powder | No minimum | ≥99% HPLC |
| Retatrutide | 2381089-83-2 | Triple agonist | Lyoph. powder | No minimum | ≥99% HPLC |
| BPC-157 | 137525-51-0 | Recovery | Lyoph. powder | No minimum | ≥99% HPLC |
| TB-500 | 107761-42-2 | Recovery | Lyoph. powder | No minimum | ≥99% HPLC |
| HGH (Somatropin) | 12629-01-5 | Growth hormone | Lyoph. powder | No minimum | ≥99% HPLC |
| Epitalon | 307297-39-8 | Anti-aging | Lyoph. powder | No minimum | ≥99% HPLC |
| NAD+ | 53-84-9 | Longevity | Lyoph. powder | No minimum | ≥99% HPLC |
| CJC-1295 | 863288-34-0 | GH secretagogue | Lyoph. powder | No minimum | ≥99% HPLC |
| Ipamorelin | 170851-70-4 | GH secretagogue | Lyoph. powder | No minimum | ≥99% HPLC |
Why Lyophilised Powder?
All QSC compounds are supplied as lyophilised (freeze-dried) powder — not pre-dissolved solutions. Lyophilised powder is the superior format for bulk supply for several reasons:
- Stability: Lyophilised peptides stored at –20°C are stable for 2+ years. Solutions degrade within days to weeks.
- Shipping: Powder ships at ambient temperature (with brief cold pack) rather than requiring continuous cold chain, reducing shipping complexity and cost.
- Flexibility: Recipients reconstitute at the concentration appropriate for their research application, rather than receiving a fixed-concentration solution.
- Verification: Powder form allows easy weight verification on receipt. Solution concentration verification requires HPLC equipment.
Research Use Only. All bulk compounds are for laboratory research use only. Not for human consumption, clinical dispensing, or commercial resale to end-consumers.