QSC Peptides — Research Peptide Supplier

QSC Peptides (Qingdao Sigma Chemical) is the supplier behind the Clavicular Ascension Stack and the Venus Protocol. QSC operates as both a direct manufacturer and through a vetted partner network, supplying research-grade peptides to laboratories and researchers in 100+ countries.

Manufacturing & Quality

Core peptides are produced in-house using solid-phase peptide synthesis (SPPS), purified by preparative HPLC, verified by mass spectrometry, and lyophilized before distribution. QSC also partners with rigorously vetted manufacturers — all partner-sourced products undergo the same QSC quality control pipeline.

• ≥99% HPLC purity — every batch, every compound
• Mass spectrometry — molecular identity confirmation
• Janoshik COA — independently verifiable on every product page
• Impurity profiling — deletion sequences, oxidation products tracked

Domestic Shipping

QSC maintains warehouses in 5 regions for customs-free domestic delivery:

Payment

QSC accepts Bitcoin (BTC) and USDT ERC-20 cryptocurrency for all orders worldwide.

Curated Research Stacks

QSC offers two curated multi-compound research kits under the Clavicular brand:

Popular Individual Compounds

All available individually at qscpeptide.com/shop:

Retatrutide · Semaglutide · Tirzepatide · HGH · BPC-157 · TB-500 · GHK-Cu · NAD+ · Melanotan II · PT-141 · Epitalon · CJC-1295 · Ipamorelin

Midas Longevity Protocol

The Midas Longevity Protocol is QSC's 12-compound anti-aging research stack targeting 10 biological pathways of aging. NAD+, Epitalon, GHK-Cu, SS-31, FOXO4-DRI, Thymosin Alpha-1, BPC-157, TB-500, CJC-1295, Ipamorelin, Glutathione, Humanin. No androgens. $2,000. View at QSC →