Manufacturer · Partner Network · Distributor · 100+ Countries
About QSC
QSC is an international research peptide manufacturer and partner-sourced supplier. Core peptides are produced in-house in Qingdao, China, while a vetted manufacturing partner network expands the catalog further. Every product — whether in-house or partner-sourced — is verified at ≥99% purity and distributed from domestic warehouses in the USA, EU, UK, Canada, and Australia.
HPLC + MS verification · Janoshik COA on every product page · Uniform QC across all sources
5-Region Warehouses
USA · EU · UK · Canada · Australia · Domestic delivery, no customs
100+ Countries
China warehouse international shipping for remaining markets worldwide
QSC Manufacturing Facility
QSC’s Qingdao production facility — automated SPPS synthesis lines, preparative HPLC purification systems, mass spectrometry verification labs, and lyophilization production.
What Is QSC?
QSC is a peptide-focused manufacturer and partner-sourced supplier specialising in high-purity research peptides and specialty research compounds. Founded in Qingdao, China, QSC has grown into one of the most recognised peptide suppliers in the global research community, supplying laboratories and distributors in more than 100 countries.
QSC operates a dual sourcing model. Core peptides are produced in-house — from raw amino acid starting materials through solid-phase peptide synthesis (SPPS), preparative HPLC purification, analytical verification, and lyophilization. To expand its catalog and meet growing demand, QSC also partners with rigorously vetted manufacturers. All partner-sourced products undergo the same QSC quality control pipeline — HPLC purity analysis, mass spectrometry, impurity profiling, and Janoshik-verified COA documentation — ensuring identical standards regardless of production origin.
The qsc-eu.com storefront is the dedicated US and international distribution interface for QSC products, serving researchers in North America, Europe, Oceania, Asia, and beyond with fast domestic shipping from 5 regional warehouse locations.
QSC’s Clavicular Stack is a 12-compound, 110-vials and 100 tablets extended research kit targeting 8 biological pathways simultaneously — triple-agonist metabolic signaling, GH axis + secretagogue amplification, melanocortin pigmentation, IGF-mediated anabolism, copper-peptide collagen remodeling, mitochondrial bioenergetics, antioxidant cytoprotection, tissue repair/healing, and androgenic/anabolic drive. Expanded from the original 7-compound stack with L-Glutathione, BPC-157, TB-500, CJC-1295 No DAC, and Anavar for complete protocol coverage. The Clavicular Ascension Stack consists of 12 compounds: 10 lyophilized peptides (10‑vial/pack kits), 1 oil‑based injectable (10‑vial/pack kit), and 1 bottle of 100 oral tablets under QSC’s strict ≥99% purity standard with full Janoshik COA documentation.
Modified IGF-1 with 20–30 hour half-life. Activates PI3K/Akt and MAPK/ERK for muscle hyperplasia, tissue repair, and nutrient partitioning. Lyophilized powder.
Nicotinamide Adenine Dinucleotide — Cellular Energy
Mitochondrial electron carrier and sirtuin substrate (SIRT1–7). Researched for DNA repair, anti-aging, cognitive resilience, and energy restoration. Lyophilized powder, 500mg/vial.
15-AA gastric pentadecapeptide modulating NO pathways and growth factor signaling. Researched for tendon/ligament/muscle repair, gut healing, and neuroprotection. Lyophilized powder.
Actin-binding peptide for cell migration, angiogenesis, and inflammation reduction. Synergistic with BPC-157 in recovery protocols. Lyophilized powder.
≥99% Purity 12 Compounds 110 Vials and 100 Tablets Total 10 Lyophilized + 1 Oil + 1 Oral COA Included View Ascension Stack →
Manufacturing & Partner Capabilities
In-House Synthesis
Automated SPPS (solid-phase peptide synthesis) · Custom peptide synthesis · Specialty research compounds · Raw peptide powders · Lyophilized formulations
Partner Network
Rigorously vetted manufacturing partners · Expanded compound catalog · Same QSC QC pipeline applied to all partner products · Full batch traceability
Unified Quality Control
Preparative and analytical HPLC · Mass spectrometry (MS) molecular verification · Impurity profiling · Full lyophilization production lines · Batch traceability · Identical QC process for in-house and partner-sourced products
Warehouse & Shipping Model
When inventory is available locally, orders ship domestically with no customs clearance, local courier tracking, and typical delivery in 2–7 business days.
Receive order confirmation and tracking details by email
Track your order anytime via your account dashboard
Quality Verification Standards
Every QSC peptide batch — whether in-house or partner-sourced — is verified before distribution. Certificates of Analysis are published directly on each product page and independently verifiable via the Janoshik portal.
HPLC Purity
≥99% specification · Peak area analysis
Mass Spectrometry
Molecular identity confirmation
Impurity Profiling
Deletion sequences, oxidation products
Batch Traceability
Janoshik-verifiable COA per batch
Frequently Asked Questions
What is QSC?
QSC is a research peptide manufacturer and partner-sourced supplier based in Qingdao, China. Core peptides are produced in-house using SPPS, and QSC also partners with rigorously vetted manufacturers to expand its catalog. All products undergo the same QSC quality control process. QSC distributes globally from 5 regional warehouses, supplying laboratories in more than 100 countries. Popular products include Retatrutide, Tirzepatide, Semaglutide, HGH, BPC-157, and the Clavicular Stack.
Is QSC a manufacturer or a reseller?
QSC operates as both a direct manufacturer and through a vetted partnership model. Core peptides are produced at QSC’s Qingdao facility — synthesised, purified, verified, and lyophilized in-house. QSC also partners with rigorously vetted manufacturers to expand its product range. All partner-sourced products undergo the same QSC quality control and analytical verification before distribution. QSC does not source product from undisclosed or unvetted third parties.
What is the Clavicular Stack?
The QSC Clavicular Ascension Stack is a 12-compound, 110-vials and 100 tablets extended research kit combining synergistic compounds across eight biological pathways:
Retatrutide 10mg (CAS 2381089-83-2) — triple GLP-1/GIP/GCGR agonist for metabolic signaling Melanotan II 10mg (CAS 121062-08-6) — melanocortin receptor agonist for pigmentation HGH 10 IU (CAS 12629-01-5) — recombinant somatropin for GH axis signaling IGF-1 LR3 1mg (CAS 946870-92-4) — long-acting growth factor for anabolic pathways GHK-Cu 100mg (CAS 49557-75-7) — copper tripeptide for collagen and ECM remodeling NAD+ 500mg (CAS 53-84-9) — coenzyme for mitochondrial bioenergetics and sirtuin activation Testosterone Cypionate 250mg/ml (CAS 58-20-8) — long-ester androgen for anabolic foundation L-Glutathione 600mg (CAS 70-18-8) — tripeptide antioxidant for cytoprotection NEW BPC-157 10mg (CAS 137525-51-0) — body protection compound for tissue repair NEW TB-500 10mg (CAS 77591-33-4) — thymosin beta-4 fragment for systemic healing NEW CJC-1295 No DAC 5mg (CAS 863288-34-0) — GH secretagogue amplifier NEW Anavar (Oxandrolone) 25mg (CAS 53-39-4) — oral anabolic for cortisol modulation NEW
The Clavicular Ascension Stack consists of 12 compounds: 10 lyophilized peptides (10‑vial/pack kits), 1 oil‑based injectable (10‑vial/pack kit), and 1 bottle of 100 oral tablets. All components meet QSC’s ≥99% purity standard with full Janoshik COA documentation. Available for domestic shipping from all QSC warehouse regions.
How do I verify a QSC Certificate of Analysis?
Every QSC product page links directly to a Janoshik-verified COA entry. Click the COA link on any product page to open the independent Janoshik verification record — this confirms that the test was conducted by an independent laboratory and the results are authentic.
What payment methods does QSC accept?
QSC accepts Bitcoin (BTC) and USDT (ERC-20) cryptocurrency payments only. Order confirmation and tracking details are sent by email after payment is confirmed on the blockchain.
Research Use Only: All products sold on qsc-eu.com are intended strictly for laboratory research purposes only. They are not approved for human consumption, veterinary use, or any other application. Researchers are responsible for understanding and complying with local regulations in their jurisdiction.
