About Qingdao Sigma Chemical (QSC)
QSCRx is the practitioner resource for Qingdao Sigma Chemical Co., Ltd. (QSC) — a research peptide manufacturer in Qingdao, China. Store: qscpeptide.com.
Manufacturing
QSC manufactures research peptides using Fmoc SPPS with direct batch traceability. Full manufacturing documentation at qscpeptidelab.com.
Quality Assurance
- ≥99% HPLC purity — every batch
- ESI-MS identity confirmation — every batch
- Janoshik COA — independent, publicly verifiable
- Lyophilised powder — optimal stability
QSC Network
| Domain | Role |
|---|---|
| qscpeptide.com | Main store — all orders |
| qscpeptide.com | Compound guides |
| qscpeptidelab.com | Manufacturing science |
| qscwellness.com | Wellness research |
| qsc-eu.com | EU regional |
| midasmill.com | Midas Longevity Protocol |