AssayIndex

CPC-2604-F4140

Triptorelin · 5 mg declared · Chinese Peptide Company Co., Ltd. · manufactured 17 Apr 2026

CHARACTERISED
Lot code
CPC-2604-F4140
Supplier
CPC — Chinese Peptide Company Co., Ltd.
Compound
Triptorelin
Compound class
Hypothalamic and posterior-pituitary hormones
Declared label claim
5mg
Manufacture date
17 Apr 2026
Index quarter
2026-Q2
Independent assays
11
Laboratories involved
VendorInvestigate, PeptideMeter, Janoshik, Nordanalyt, Medutest
Provenance mix
Buyer-sourced ×11
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 11
Median purity 98.17% n=11
Spread (max − min) 1.12pp n=11
Standard deviation 0.332pp n=11
97.397.798.298.799.199.6100.0This lot (CPC-2604-F4140)This lot (CPC-2604-F4140): Q1 97.96, median 98.17, Q3 98.31, n=11n=11All TriptorelinAll Triptorelin: Q1 98.13, median 98.52, Q3 99.36, n=23n=23 Purity (% area)
Figure 1. This lot's independent purity results against the whole Triptorelin record set in the index. The vertical line is the index acceptance specification for the hypothalamic and posterior-pituitary hormones 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 11

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-2026-043505CPC-2604-F4140VendorInvestigate2026-Q298.343.93Buyer-sourced0FAIL
AX-2026-043506CPC-2604-F4140PeptideMeter2026-Q298.174.3790.1Buyer-sourced0FAIL
AX-2026-043507CPC-2604-F4140Janoshik2026-Q297.985.00Buyer-sourced0FAIL
AX-2026-043508CPC-2604-F4140Janoshik2026-Q298.084.2997.2Buyer-sourced0FAIL
AX-2026-043509CPC-2604-F4140Nordanalyt2026-Q298.283.9696.9Buyer-sourced0FAIL
AX-2026-043510CPC-2604-F4140VendorInvestigate2026-Q297.484.06103.9Buyer-sourced0FAIL
AX-2026-043511CPC-2604-F4140VendorInvestigate2026-Q297.734.33Buyer-sourced0FAIL
AX-2026-043512CPC-2604-F4140Medutest2026-Q298.274.1899.2Buyer-sourced0FAIL
AX-2026-043513CPC-2604-F4140Medutest2026-Q298.524.5095.4Buyer-sourced0PASS
AX-2026-043514CPC-2604-F4140Janoshik2026-Q298.604.14106.1Buyer-sourced0PASS
AX-2026-043515CPC-2604-F4140Janoshik2026-Q297.944.8595.7Buyer-sourced0FAIL
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
VendorInvestigate398.34, 97.48, 97.7397.7332min-0.1197.84
PeptideMeter198.1798.1728min-0.0598.22
Janoshik497.98, 98.08, 98.60, 97.9498.0330min+0.0098.03
Nordanalyt198.2898.2835min+0.0298.26
Medutest298.27, 98.5298.3925min+0.0898.31

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)97.9798.34divergence -0.20 pp vs batch median
Total impurities (% area)2.031.66
Largest single impurity (% area)not stated0.81
Water (%)not stated3.93
Counter-ion (%)8.74.15
Peptide content (%w/w)87.2not determined
Endotoxin (EU/mg)not statednot determined
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
ring-opened pGlu (+18 Da)11 / 110.920.70–1.27
[L-Trp6]-diastereomer (gonadorelin analogue)11 / 110.470.15–0.73
des-Gly10-NH2 (−74 Da)11 / 110.220.17–0.30
oxidised Trp (+16 Da)11 / 110.140.09–0.68
Section 7

What this rollup does not establish