AssayIndex

WXT-2412-Y6192

BPC-157 · 10 mg declared · WuXi TIDES (WuXi AppTec Testing Division) · manufactured 22 Dec 2024

CHARACTERISEDSHARED BULK
Lot code
WXT-2412-Y6192
Supplier
WXT — WuXi TIDES (WuXi AppTec Testing Division)
Compound
BPC-157
Compound class
Tissue-repair and immunomodulatory peptides
Declared label claim
10mg
Manufacture date
22 Dec 2024
Index quarter
2025-Q1
Independent assays
13
Laboratories involved
Medutest, PeptideMeter, Nordanalyt, Janoshik, VendorInvestigate, Kestrel
Provenance mix
Buyer-sourced ×2 · Supplier-supplied ×10 · 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 99.54% n=13
Spread (max − min) 1.37pp n=13
Standard deviation 0.410pp n=13
96.897.397.998.599.099.6100.2This lot (WXT-2412-Y6192)This lot (WXT-2412-Y6192): Q1 99.32, median 99.54, Q3 99.92, n=13n=13All BPC-157All BPC-157: Q1 98.59, median 99.15, Q3 99.71, n=591n=591 Purity (% area)
Figure 1. This lot's independent purity results against the whole BPC-157 record set in the index. The vertical line is the index acceptance specification for the tissue-repair and immunomodulatory peptides class, 98.0 % 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-2025-021163WXT-2412-Y6192Medutest2025-Q199.377.83Supplier-supplied3MARGINAL
AX-2025-021164WXT-2412-Y6192PeptideMeter2025-Q199.328.57Supplier-supplied3MARGINAL
AX-2025-021165WXT-2412-Y6192Nordanalyt2025-Q199.937.9995.9Supplier-supplied2MARGINAL
AX-2025-021166WXT-2412-Y6192Medutest2025-Q199.548.1689.0Supplier-supplied3MARGINAL
AX-2025-021167WXT-2412-Y6192PeptideMeter2025-Q199.877.1389.6Supplier-supplied4MARGINAL
AX-2025-021168WXT-2412-Y6192Janoshik2025-Q199.327.6590.1Supplier-supplied3MARGINAL
AX-2025-021169WXT-2412-Y6192VendorInvestigate2025-Q199.097.44Buyer-sourced2MARGINAL
AX-2025-021170WXT-2412-Y6192Kestrel2025-Q199.938.04Supplier-supplied2MARGINAL
AX-2025-021171WXT-2412-Y6192PeptideMeter2025-Q198.567.97104.8Buyer-sourced2MARGINAL
AX-2025-021172WXT-2412-Y6192Janoshik2025-Q199.587.27Supplier-supplied2MARGINAL
AX-2025-021173WXT-2412-Y6192Medutest2025-Q199.937.8199.6Supplier-supplied2MARGINAL
AX-2025-021174WXT-2412-Y6192PeptideMeter2025-Q199.928.05Supplier-supplied2MARGINAL
AX-2025-021175WXT-2412-Y6192Janoshik2025-Q199.387.3190.2Laboratory-retained3MARGINAL
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
Medutest399.37, 99.54, 99.9399.5425min+0.0899.46
PeptideMeter499.32, 99.87, 98.56, 99.9299.5928min-0.0599.64
Nordanalyt199.9399.9335min+0.0299.91
Janoshik399.32, 99.58, 99.3899.3830min+0.0099.38
VendorInvestigate199.0999.0932min-0.1199.20
Kestrel199.9399.9315min+0.2499.69

This lot contributes 15 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)99.9099.37divergence +0.36 pp vs batch median
Total impurities (% area)not stated0.63
Largest single impurity (% area)not stated0.36
Water (%)not stated7.83
Counter-ion (%)4.26.93
Peptide content (%w/w)91.7not determined
Endotoxin (EU/mg)0.470.78
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
des-Gly truncate (−57 Da)13 / 130.170.03–0.33
pyroglutamate cyclisation (−17 Da)10 / 130.040.01–0.21
truncated (1-12)8 / 130.040.02–0.05
BPC-157 arginine-salt artefact7 / 130.360.04–0.97
[D-Val]-diastereomer7 / 130.060.02–0.09
acetylated N-terminus (+42 Da)6 / 130.060.02–0.09
Section 6

Shared-bulk links

Rule AX-R09. Where impurity fingerprints and latent composition match across companies, the index treats the material as one bulk and counts it once in aggregates.

LotSold byRoleReportsMedian purity
HOMO-2412-B2307Homopeptideparent bulk699.29
WXT-2412-Y6192WXTthis lot1399.54
Section 7

What this rollup does not establish