P-21 99.2% Purity — Qingdao Sigma ChemicalCertificate of Analysis · Independent third-party lab result
[skipped: off-topic — no tracked compound detected in OCR/peptide field]
- Test date
- 2026-01-19
- Testing lab
- Janoshik
- Batch / lot
- —
- Quantity
- 12.59mg
- Endotoxins
- —
- Assay method
- HPLC
- Label dose
- 10mg
How this result compares
This P-21 certificate's tested purity of 99.16% ranks higher than 50% of the 8 P-21 certificates with a purity result we have catalogued (median 99.16%).
Tested 2026-01-19 by Janoshik via HPLC. This test is newer than 60% of our catalogued P-21 certificates.
Qingdao Sigma Chemical has 510 certificates in our corpus, including 4 for P-21 at a median tested purity of 99.16%.
Test report image
Janoshik (public)
Artifact capturedWe have the certificate image (SHA-256 hash captured) — you can verify it loads from the upstream lab and matches the artifact shown here.
Verify on the upstream labOCR text Raw extracted text
Extracted via OCR. Names, emails, phone numbers, and street addresses are auto-redacted before display.
{"peptide": "P-21", "dose": "10mg", "purity_pct": 99.159, "purity_label": "99.159%", "method": "HPLC", "test_date": "2026-01-19", "client": "Telegram @tracyfromqsc", "notes": "The unretained peak, eluting at the column's void volume, was not included in the purity assessment.", "label_qty": "10mg", "tested_qty": "12.59mg", "quantity_deviation_pct": 25.9, "is_blend": false, "components_json": "", "ocr_confidence": 0.95}