AssayIndex

WWB-2511-S3009

ARA-290 · 4 mg declared · Wuhan Wansheng Biotechnology Co., Ltd. · manufactured 16 Nov 2025

CHARACTERISED
Lot code
WWB-2511-S3009
Supplier
WWB — Wuhan Wansheng Biotechnology Co., Ltd.
Compound
ARA-290
Compound class
Tissue-repair and immunomodulatory peptides
Declared label claim
4mg
Manufacture date
16 Nov 2025
Index quarter
2026-Q1
Independent assays
10
Laboratories involved
Nordanalyt, PeptideMeter, Janoshik, Medutest
Provenance mix
Supplier-supplied ×8 · Laboratory-retained ×2
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 10
Median purity 99.93% n=10
Spread (max − min) 0.51pp n=10
Standard deviation 0.204pp n=10
97.898.298.698.999.399.7100.1This lot (WWB-2511-S3009)This lot (WWB-2511-S3009): Q1 99.81, median 99.93, Q3 99.93, n=10outlier 99.42outlier 99.45n=10All ARA-290All ARA-290: Q1 99.03, median 99.45, Q3 99.88, n=65n=65 Purity (% area)
Figure 1. This lot's independent purity results against the whole ARA-290 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 10

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-2026-041313WWB-2511-S3009Nordanalyt2026-Q199.934.81—Supplier-supplied0PASS
AX-2026-041314WWB-2511-S3009PeptideMeter2026-Q199.454.87—Laboratory-retained1MARGINAL
AX-2026-041315WWB-2511-S3009PeptideMeter2026-Q199.934.8398.4Supplier-supplied0PASS
AX-2026-041316WWB-2511-S3009Janoshik2026-Q199.795.17—Supplier-supplied0PASS
AX-2026-041317WWB-2511-S3009Janoshik2026-Q199.934.60—Supplier-supplied0PASS
AX-2026-041318WWB-2511-S3009Medutest2026-Q199.934.44107.4Supplier-supplied0PASS
AX-2026-041319WWB-2511-S3009PeptideMeter2026-Q199.885.1089.2Supplier-supplied2MARGINAL
AX-2026-041320WWB-2511-S3009Janoshik2026-Q199.425.13—Laboratory-retained1MARGINAL
AX-2026-041321WWB-2511-S3009Janoshik2026-Q199.934.6493.0Supplier-supplied0PASS
AX-2026-041322WWB-2511-S3009Janoshik2026-Q199.935.26—Supplier-supplied0PASS
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
Nordanalyt199.9399.9335min+0.0299.91
PeptideMeter399.45, 99.93, 99.8899.8828min-0.0599.93
Janoshik599.79, 99.93, 99.42, 99.93, 99.9399.9330min+0.0099.93
Medutest199.9399.9325min+0.0899.85

This lot contributes 6 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)99.9099.93divergence -0.03 pp vs batch median
Total impurities (% area)0.100.07
Largest single impurity (% area)0.070.04
Water (%)2.54.81
Counter-ion (%)6.54.21
Peptide content (%w/w)90.4not determined
Endotoxin (EU/mg)0.961.54
Method stated on certificateYES—column, 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
deamidated (+1 Da)10 / 100.030.03–0.21
acetyl adduct (+42 Da)8 / 100.040.04–0.13
des-Gln truncate (−128 Da)5 / 100.050.04–0.18
[D-Ser]-diastereomer3 / 100.060.03–0.06
Section 7

What this rollup does not establish