QSC Supply is the wholesale and bulk procurement resource for Qingdao Sigma Chemical (QSC) — a direct manufacturer of research peptides and raw powders. 75+ compounds at ≥99% HPLC purity. 8 domestic fulfilment regions. Independent Janoshik COA on every batch.
Direct manufacturer advantages. Independent verification. 8-region domestic distribution network.
QSC is Qingdao Sigma Chemical — the synthesis facility, not an intermediary. Direct sourcing eliminates reseller markup, provides batch traceability from amino acid coupling to lyophilisation, and enables custom quantity discussions without third-party constraints.
Manufacturing process →Every production batch verified by reverse-phase HPLC and ESI-MS before dispatch. Independent COA from Janoshik Analytical Laboratories — the industry-standard third-party testing provider. Publicly verifiable by batch number.
Testing methodology →Domestic warehouses in USA, EU, UK, Canada, Australia, Singapore, Thailand, and Vietnam. Local fulfilment eliminates international customs delay and reduces transit risk for sensitive lyophilised powder shipments.
Ordering guide →The largest research peptide catalogue from a single manufacturer: GLP-1 agonists, GH secretagogues, recovery peptides, anti-aging compounds, nootropics, hormones. Most compounds available from existing domestic inventory.
Browse catalogue →Standard orders through qsc-usa.com with no minimum quantity. For institutional and wholesale procurement requiring higher volumes or custom bulk formats, direct contact with QSC is available through the website.
Bulk enquiries →Bitcoin (BTC) and USDT payment accepted. Frictionless international procurement for research institutions and laboratories in regions where traditional payment rails create friction for research compound sourcing.
Payment guide →Six primary compound categories. All ≥99% HPLC purity, Janoshik COA, lyophilised powder form.
| Category | Key Compounds | SKU Count | Form | Availability | Catalogue |
|---|---|---|---|---|---|
| GLP-1 & Metabolic | Semaglutide, Tirzepatide, Retatrutide, Survodutide, Liraglutide, Orforglipron | 9+ | Lyophilised powder | IN STOCK | View → |
| Growth Hormone Axis | HGH, CJC-1295, Ipamorelin, Sermorelin, MK-677, GHRP-2, GHRP-6, IGF-1 LR3 | 10+ | Lyophilised powder | IN STOCK | View → |
| Recovery & Healing | BPC-157, TB-500, GHK-Cu, Thymosin Alpha-1, LL-37, KPV | 8+ | Lyophilised powder | IN STOCK | View → |
| Anti-Aging & Longevity | Epitalon, NAD+, SS-31, FOXO4-DRI, Humanin, MOTS-c, Glutathione | 8+ | Lyophilised powder | IN STOCK | View → |
| Cognitive & Nootropic | Semax, Selank, DSIP | 3+ | Lyophilised powder | IN STOCK | View → |
| Hormones & SARMs | Testosterone Cypionate, Enclomiphene, PT-141, Melanotan II | 6+ | Mixed forms | IN STOCK | View → |
QSC maintains domestic fulfilment warehouses across 8 global regions. Most orders ship from a local warehouse — no international customs exposure for the majority of destinations.
| Region | Warehouse | Coverage | Typical Transit | Notes |
|---|---|---|---|---|
| 🇺🇸 United States | US Domestic | All 50 states | 3–7 business days | Primary volume region |
| 🇪🇺 European Union | EU Domestic | EU member states | 3–7 business days | Intra-EU shipping |
| 🇬🇧 United Kingdom | UK Domestic | Great Britain + NI | 3–5 business days | Post-Brexit domestic |
| 🇨🇦 Canada | CA Domestic | All provinces | 4–8 business days | Nationwide coverage |
| 🇦🇺 Australia | AU Domestic | All states | 4–7 business days | Domestic fulfilment |
| 🇸🇬 Singapore | SG Domestic | Singapore | 2–4 business days | SEA hub |
| 🇹🇭 Thailand | TH Domestic | Thailand | 3–5 business days | SEA coverage |
| 🇻🇳 Vietnam | VN Domestic | Vietnam | 3–5 business days | SEA coverage |
Regions not covered by domestic stock: fulfilled from Qingdao manufacturing facility. Additional transit 7–14 business days.
75+ compounds. ≥99% HPLC purity. Janoshik COA. 8-region domestic shipping. No MOQ for standard orders.
RESEARCH USE ONLY. All compounds supplied are for laboratory research purposes only. Not for human consumption, clinical use, or resale to end-consumers without appropriate regulatory clearance. QSC Supply (qsc-supply.com) is an official distribution and wholesale resource for Qingdao Sigma Chemical Co., Ltd. Store: qsc-usa.com.