HJ-2511-L5169

TB-500 · 2 mg declared · Hubei Jianxiang Bioscience Co., Ltd. · manufactured 14 Nov 2025

CHARACTERISED

Lot code: HJ-2511-L5169
Supplier: HJ — Hubei Jianxiang Bioscience Co., Ltd.
Compound: TB-500
Compound class: Tissue-repair and immunomodulatory peptides
Declared label claim: 2mg
Manufacture date: 14 Nov 2025
Index quarter: 2026-Q2
Independent assays: 10
Laboratories involved: VendorInvestigate, PeptideMeter, Janoshik, Nordanalyt
Provenance mix: Buyer-sourced ×9 · 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 10

Median purity 99.31% n=10

Spread (max − min) 0.91pp n=10

Standard deviation 0.283pp n=10

Figure 1. This lot's independent purity results against the whole TB-500 record set in the index. The vertical line is the index acceptance specification for the tissue-repair and immunomodulatory peptides class, 98.5 % 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.

Report	Lot	Lab	Quarter	Purity %	Water %	Recovery %	Provenance	Flags	Result
AX-2026-042481	HJ-2511-L5169	VendorInvestigate	2026-Q2	98.93	2.66	94.9	Buyer-sourced	1	MARGINAL
AX-2026-042482	HJ-2511-L5169	PeptideMeter	2026-Q2	99.84	2.88	102.6	Buyer-sourced	1	MARGINAL
AX-2026-042483	HJ-2511-L5169	Janoshik	2026-Q2	99.00	2.67	90.0	Buyer-sourced	1	MARGINAL
AX-2026-042484	HJ-2511-L5169	PeptideMeter	2026-Q2	99.23	2.18	104.6	Buyer-sourced	1	MARGINAL
AX-2026-042485	HJ-2511-L5169	Janoshik	2026-Q2	99.06	2.55	—	Buyer-sourced	1	MARGINAL
AX-2026-042486	HJ-2511-L5169	PeptideMeter	2026-Q2	99.17	2.85	89.5	Buyer-sourced	2	MARGINAL
AX-2026-042487	HJ-2511-L5169	Janoshik	2026-Q2	99.40	2.59	96.4	Buyer-sourced	1	MARGINAL
AX-2026-042488	HJ-2511-L5169	Janoshik	2026-Q2	99.56	3.03	—	Laboratory-retained	1	MARGINAL
AX-2026-042489	HJ-2511-L5169	Janoshik	2026-Q2	99.49	2.73	106.1	Buyer-sourced	1	MARGINAL
AX-2026-042490	HJ-2511-L5169	Nordanalyt	2026-Q2	99.39	3.27	105.6	Buyer-sourced	1	MARGINAL

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.

Laboratory	Reports	Purity results (% area)	Median	Gradient	Published bias (pp)	Bias-adjusted
VendorInvestigate	1	98.93	98.93	32min	-0.11	99.04
PeptideMeter	3	99.84, 99.23, 99.17	99.23	28min	-0.05	99.28
Janoshik	5	99.00, 99.06, 99.40, 99.56, 99.49	99.40	30min	+0.00	99.40
Nordanalyt	1	99.39	99.39	35min	+0.02	99.37

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.

Figure	Supplier COA	This report	Index note
Purity (% area)	99.5	98.93	divergence +0.19 pp vs batch median
Total impurities (% area)	0.50	1.07
Largest single impurity (% area)	not stated	0.76
Water (%)	0.5	2.66
Counter-ion (%)	not stated	4.72
Peptide content (%w/w)	94.7	92.20
Endotoxin (EU/mg)	0.81	not determined
Method stated on certificate	YES	—	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 impurity	Reported in	Median % area	Range
[D-Thr]-diastereomer	10 / 10	0.10	0.03–0.16
des-acetyl TB-500 (−42 Da)	10 / 10	0.10	0.03–0.20
des-Gln truncate (−128 Da)	10 / 10	0.07	0.02–0.35
C-terminal amide (−1 Da)	9 / 10	0.37	0.09–0.76

Section 7

Reproducibility across independent tests

Member reports 10

By laboratory

The supplier's certificate for this lot

Impurity fingerprint

What this rollup does not establish