AssayIndex

CPC-2511-F1491

Hexarelin · 2 mg declared · Chinese Peptide Company Co., Ltd. · manufactured 16 Nov 2025

CHARACTERISED
Lot code
CPC-2511-F1491
Supplier
CPC — Chinese Peptide Company Co., Ltd.
Compound
Hexarelin
Compound class
Growth-hormone axis peptides
Declared label claim
2mg
Manufacture date
16 Nov 2025
Index quarter
2026-Q2
Independent assays
13
Laboratories involved
PeptideMeter, Janoshik, VendorInvestigate, Medutest, Nordanalyt
Provenance mix
Buyer-sourced ×5 · Supplier-supplied ×7 · Laboratory-retained ×1
Section 1

Reproducibility across independent tests

Every report below is an observation of the same physical material. What they disagree about is measurement; what they agree about is the lot. The size of the disagreement is compared against what the contributing laboratories' own repeatability figures predict.

Independent assays 13
Median purity 98.58% n=13
Spread (max − min) 0.89pp n=13
Standard deviation 0.310pp n=13
97.497.898.398.799.299.7100.1This lot (CPC-2511-F1491)This lot (CPC-2511-F1491): Q1 98.25, median 98.58, Q3 98.77, n=13n=13All HexarelinAll Hexarelin: Q1 98.27, median 98.72, Q3 99.54, n=43n=43 Purity (% area)
Figure 1. This lot's independent purity results against the whole Hexarelin record set in the index. The vertical line is the index acceptance specification for the growth-hormone axis peptides class, 99.0 % area. A narrow box on the top row against a wide box on the bottom row is the ideal reading: it means the disagreement between lots is much larger than the disagreement within this one.
Section 2

Member reports 13

Every report the index holds on this lot. Each is a page carrying its own chromatogram, mass spectrum, mass balance, provenance and caveats.

ReportLotLabQuarterPurity %Water %Recovery %ProvenanceFlagsResult
AX-2026-043268CPC-2511-F1491PeptideMeter2026-Q298.945.33Supplier-supplied2FAIL
AX-2026-043269CPC-2511-F1491Janoshik2026-Q298.615.38105.7Supplier-supplied2FAIL
AX-2026-043270CPC-2511-F1491VendorInvestigate2026-Q298.055.08105.6Buyer-sourced1FAIL
AX-2026-043271CPC-2511-F1491Janoshik2026-Q298.355.33102.6Buyer-sourced2FAIL
AX-2026-043272CPC-2511-F1491VendorInvestigate2026-Q298.255.36100.1Buyer-sourced2FAIL
AX-2026-043273CPC-2511-F1491Janoshik2026-Q298.284.57Supplier-supplied2FAIL
AX-2026-043274CPC-2511-F1491PeptideMeter2026-Q298.895.10Supplier-supplied2FAIL
AX-2026-043275CPC-2511-F1491Janoshik2026-Q298.774.43Supplier-supplied2FAIL
AX-2026-043276CPC-2511-F1491Medutest2026-Q298.225.17Laboratory-retained2FAIL
AX-2026-043277CPC-2511-F1491Janoshik2026-Q298.725.0395.0Supplier-supplied2FAIL
AX-2026-043278CPC-2511-F1491VendorInvestigate2026-Q298.585.08Buyer-sourced1FAIL
AX-2026-043279CPC-2511-F1491PeptideMeter2026-Q298.875.35Supplier-supplied2FAIL
AX-2026-043280CPC-2511-F1491Nordanalyt2026-Q298.165.2996.0Buyer-sourced1FAIL
Section 3

By laboratory

Where more than one laboratory assayed this lot, the difference between them is a paired observation of their relative bias — the same material, the same time window, different instruments. Those pairs are what the index's bias estimates are built from.

LaboratoryReportsPurity results (% area)MedianGradientPublished bias (pp)Bias-adjusted
PeptideMeter398.94, 98.89, 98.8798.8928min-0.0598.94
Janoshik598.61, 98.35, 98.28, 98.77, 98.7298.6130min+0.0098.61
VendorInvestigate398.05, 98.25, 98.5898.2532min-0.1198.36
Medutest198.2298.2225min+0.0898.14
Nordanalyt198.1698.1635min+0.0298.14

This lot contributes 10 paired comparisons to the inter-lab analysis.

Section 4

The supplier's certificate for this lot

One number the supplier wrote, beside the median of the numbers other people measured on the same physical material. That comparison is only available because the index groups by lot.

FigureSupplier COAThis reportIndex note
Purity (% area)98.9798.94divergence +0.39 pp vs batch median
Total impurities (% area)1.031.06
Largest single impurity (% area)0.640.46
Water (%)not stated5.33
Counter-ion (%)not stated5.15
Peptide content (%w/w)not statednot determined
Endotoxin (EU/mg)not stated0.39
Method stated on certificateYEScolumn, gradient and wavelength given
Section 5

Impurity fingerprint

The named impurities reported across this lot's assays, with how consistently each was seen. A fingerprint is what allows two lot numbers held by different companies to be identified as one bulk.

Named impurityReported inMedian % areaRange
oxidised Trp (+16 Da)13 / 130.460.06–0.85
des-Lys (−128 Da)13 / 130.670.39–1.02
des-methyl hexarelin (GHRP-6, −14 Da)13 / 130.240.13–0.48
C-terminal free acid (+1 Da)13 / 130.110.08–0.15
Section 7

What this rollup does not establish