AssayIndex

BCH-2602-E8253

N-Acetyl Semax Amide · 10 mg declared · Bachem Holding (Suzhou) Co., Ltd. · manufactured 22 Feb 2026

CHARACTERISED
Lot code
BCH-2602-E8253
Supplier
BCH — Bachem Holding (Suzhou) Co., Ltd.
Compound
N-Acetyl Semax Amide
Compound class
Neuroactive and cognitive peptides
Declared label claim
10mg
Manufacture date
22 Feb 2026
Index quarter
2026-Q3
Independent assays
4
Laboratories involved
Janoshik
Provenance mix
Supplier-supplied ×3 · 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 4
Median purity 97.47% n=4
Spread (max − min) 0.31pp n=4
Standard deviation 0.147pp n=4
97.197.698.198.699.199.6100.1This lot (BCH-2602-E8253)This lot (BCH-2602-E8253): Q1 97.45, median 97.47, Q3 97.54, n=4outlier 97.75n=4All N-Acetyl Semax AmideAll N-Acetyl Semax Amide: Q1 98.79, median 99.26, Q3 99.77, n=89outlier 97.31n=89 Purity (% area)
Figure 1. This lot's independent purity results against the whole N-Acetyl Semax Amide record set in the index. The vertical line is the index acceptance specification for the neuroactive and cognitive 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 4

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-2026-043573BCH-2602-E8253Janoshik2026-Q397.478.59—Supplier-supplied1FAIL
AX-2026-043574BCH-2602-E8253Janoshik2026-Q397.758.8597.9Supplier-supplied1FAIL
AX-2026-043575BCH-2602-E8253Janoshik2026-Q397.449.19104.8Supplier-supplied1FAIL
AX-2026-043576BCH-2602-E8253Janoshik2026-Q397.469.5392.4Laboratory-retained1FAIL
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
Janoshik497.47, 97.75, 97.44, 97.4697.4730min+0.0097.47

A single laboratory assayed this lot, so it contributes no paired comparison and the bias-adjusted column is a subtraction rather than a measurement.

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)98.097.47divergence +0.53 pp vs batch median
Total impurities (% area)2.002.53
Largest single impurity (% area)0.791.07
Water (%)not stated8.59
Counter-ion (%)2.86.68
Peptide content (%w/w)96.5not determined
Endotoxin (EU/mg)not statednot determined
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
Met sulfoxide (+16 Da)4 / 40.660.22–1.08
N-acetyl semax free acid (+1 Da)4 / 40.940.72–1.31
semax (des-acetyl, des-amide, −41 Da)4 / 40.480.38–0.65
des-acetyl amide (−42 Da)4 / 40.350.30–0.36
Section 7

What this rollup does not establish