QSC vs Peptide Sciences — P21 | Research Grade Comparison

QSC vs Peptide Sciences — P21

Research procurement comparison for P21. See the P21 research hub for mechanism and study data.

Criterion QSC Peptide Sciences
Purity ≥99% HPLC — Janoshik COA Variable — verify
COA Independent (Janoshik) In-house or third-party
Synthesis Fmoc SPPS — direct manufacture Varies
Shipping USA · EU · UK · CA · AU Check region
Dispatch Same-week Variable

Procurement checklist

Verify for P21: HPLC purity method, COA issuer, MS identity confirmation, domestic shipping region, batch consistency records.

Research Use Only: All QSC compounds are sold strictly for laboratory research purposes. Not for human use.
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