AX-2026-042568

Ipamorelin · 2 mg declared · Hubei Jianxiang Bioscience Co., Ltd. · lot HJ-2604-T6645

FAILIDENTITY CONSISTENT

Report ID: AX-2026-042568
Compound: Ipamorelin
Compound class: Growth-hormone axis peptides
Supplier: HJ — Hubei Jianxiang Bioscience Co., Ltd.
Batch / lot: HJ-2604-T6645
Declared label claim: 2mg
Laboratory: Janoshik Analytical
Assay date: 25 May 2026
Submitted: 12 Jun 2026
Quarter: 2026-Q2
Submitter: a.bergstrom
Sample provenance: Buyer-sourced

Section 1

Results

Measured against the index acceptance specification for the growth-hormone axis peptides class. A specification is a decision the index made; a result is a measurement. See where each threshold came from.

Parameter	Method	Result	Unit	Index spec
Purity	RP-HPLC, 30 min gradient, 214 nm	98.99	% area	≥ 99.0	FAIL
Total impurities	RP-HPLC, sum of reported peaks	1.01	% area	≤ 1.0	FAIL
Largest single impurity	RP-HPLC — [D-Trp]-epimer	0.47	% area	≤ 1.00	PASS
Identity — theoretical monoisotopic mass	calculated from molecular formula	711.3856	Da	—	NOT TESTED
Identity — observed monoisotopic mass	LC-MS, high resolution (ESI-TOF/QTOF)	711.3821	Da	—	NOT TESTED
Mass accuracy	observed vs theoretical	-4.9	ppm	± 15	PASS
Peptide content	not ordered on this submission	not determined	—	required to check label claim	NOT TESTED
Water content	Karl Fischer, coulometric, duplicate	5.14	%	≤ 9.0	PASS
Counter-ion (acetate)	anion-exchange ion chromatography	4.85	%	≤ 12.0	PASS
Residual solvent + inorganic residue	estimated — see /methods/residual-solvents-q3c/	0.64	%	—	NOT TESTED
Endotoxin	not ordered on this submission	not determined	—	≤ 5.0	NOT TESTED
Sterility	not ordered on this submission	not determined	—	no growth	NOT TESTED
Appearance	visual, diffuse light, black and white background	White lyophilised cake, intact	—	white to off-white intact cake	PASS
Reconstitution clarity	reconstituted per submitter procedure	Clear, colourless, no visible particulates	—	clear, no visible particulates	PASS
pH (reconstituted, 1 mg/mL)	potentiometric, two-point calibration	5.21	—	2.5 – 8.0	PASS
Retention time (observed)	RP-HPLC, 30 min gradient	8.38	min	8.24 ± 0.25 (normalised)	PASS
Peak asymmetry (10 % height)	Ph. Eur. 2.2.46	0.97	—	0.80 – 1.50	PASS
Plate count, main peak	N = 5.54 (t/w½)²	59,921	—	≥ 20,000	PASS
Resolution to nearest impurity	vs [D-Trp]-epimer	0.85	—	no index criterion	REPORTED

Section 2

Chromatogram and peak integration

The figure is drawn from the table. It is not an independent illustration — if a number in the table changed, the trace would change with it.

Figure 1. RP-HPLC trace, 30 min gradient, 214 nm. Drawn from the peak-integration table below: peak positions are the reported retention times, peak areas are the reported area percentages, peak widths follow the reported plate count of 59,921, and skew follows the reported asymmetry factor of 0.97. Baseline noise is seeded from the report ID and is illustrative. The lower panel is the same trace at a stated vertical expansion with the slow gradient drift subtracted, because at full scale a 0.47 % impurity against a 98.99 % main peak is a line two pixels tall; the main peak runs off-scale there by design.

#	Peak	RT	Area (µV·s)	% area	Δ mass (Da)
1	Ipamorelin — main peak	8.38	4,811,221	98.99	—
2	[D-Trp]-epimer	8.26	22,843	0.47	0.000
3	oxidised Trp (+16 Da)	8.04	14,095	0.29	+15.995
4	Aib-deletion sequence (−85 Da)	8.10	5,346	0.11	-85.053
5	C-terminal free acid (+1 Da)	8.56	3,402	0.07	+0.984
6	des-Lys (−128 Da)	8.16	3,402	0.07	-128.095
Closure check — purity + Σ impurities				100.00	CLOSES

Reporting threshold 0.05 % area. Peaks below it are not reported and are therefore excluded from the total, which overstates purity by their sum — see peak integration.

Section 3

Mass spectrum and identity

Theoretical monoisotopic mass 711.3856 Da, computed from C38H49N9O5. All ppm figures on this site are against monoisotopic values — see why that matters.

Figure 2. ESI charge-state envelope, high-resolution instrument. Sticks are placed at m/z = (M + z × 1.007276)/z for the observed neutral mass of 711.3821 Da. Sodium (+21.982/z) and potassium (+37.956/z) adducts are shown where the parent charge state exceeds 25 % relative abundance; they are adducts of the same molecule and are not impurities.

Charge	Theoretical m/z	Observed m/z	Δ m/z	Rel. abundance (%)
2+	356.7001	356.6983	-0.0018	53.4
1+	712.3929	712.3894	-0.0035	100.0

Section 4

Gravimetric mass balance

Water, counter-ion, residual and total peptide content are exhaustive and mutually exclusive categories. They must account for 100 % of the cake mass. The index closes this to within 0.02 pp and the build asserts it.

Supplier certificate, as declared

The supplier's own figures for this lot, beside the independent measurement. Divergence is assessed against the batch median, not against this single report — see rule AX-R05.

Figure	Supplier COA	This report	Index note
Purity (% area)	99.31	98.99	divergence +0.62 pp vs batch median
Total impurities (% area)	0.69	1.01
Largest single impurity (% area)	0.30	0.47
Water (%)	3.5	5.14
Counter-ion (%)	not stated	4.85
Peptide content (%w/w)	not stated	not determined
Endotoxin (EU/mg)	8.47	not determined
Method stated on certificate	YES	—	column, gradient and wavelength given

Section 5

Provenance and caveats

Where a sample came from changes the weight of the evidence. The index treats it as a first-class field.

Sample provenance: Buyer-sourced
Evidentiary weight: Strongest available evidence in this index.
Chain of custody: Retail purchase → submitter (−20 °C, 14 d) → laboratory (courier, dry ice, 8 d) → assay.
Assay date: 25 May 2026
Submitted to the index: 12 Jun 2026
Laboratory: Janoshik Analytical, Ostrava, Czechia
Method basis: 30 min gradient · high-resolution MS
Verification status: IDENTITY CONSISTENT

What this report does not establish

How much of the named compound is in the vial. Peptide content was not determined, so recovered mass cannot be calculated and the label claim cannot be checked.
That the material is free of bacterial endotoxin. Endotoxin was not measured. No chromatographic result bears on it.
That the material is sterile. Sterility was not tested.
That any other vial in the same lot has the same composition. One vial was tested. Within-lot vial-to-vial variation in this index has a median of 0.28 pp and a 90th percentile of 0.74 pp.
That any other lot from the same supplier has the same composition. Batch-to-batch variation is larger than within-batch variation for every supplier here.
That the material is suitable for administration to a human or an animal. These are research compounds. No result on this site is a safety assessment and the index takes no position on use.
That the material was manufactured by the supplier that sold it. Contract synthesis is normal in this market and twenty-nine batches in the index fingerprint to a bulk from a different company than the one named on the label.

Section 6

Annotations 3

Signed technical comments from index contributors. Not a discussion forum — annotations question or contextualise the result, and the data team replies where a reply is warranted.

mass_defect12 Jun 2026

Identity confirmed and purity at 98.99 %. The two answer different questions — what it is, and how much else is in it — and a record carrying both is the version worth citing.

ms_confirm12 Jun 2026

An orthogonal identity method on the same lot would make this the strongest class of record the index holds. Mass plus retention is already better than most.

coa_reader12 Jun 2026

The certificate that arrives with a retail order is the certificate an ordinary buyer gets. Assessing it is assessing the real documentation practice rather than the sample-request one.

Section 7

Related records

Same batch — lot HJ-2604-T6645 n=6

Report	Lot	Lab	Quarter	Purity %	Water %	Recovery %	Provenance	Flags	Result
AX-2026-042566	HJ-2604-T6645	Janoshik	2026-Q2	98.59	4.98	89.6	Buyer-sourced	2	FAIL
AX-2026-042567	HJ-2604-T6645	Janoshik	2026-Q2	98.50	5.48	—	Buyer-sourced	1	FAIL
AX-2026-042569	HJ-2604-T6645	Medutest	2026-Q2	98.79	5.83	91.5	Buyer-sourced	0	FAIL
AX-2026-042570	HJ-2604-T6645	Kestrel	2026-Q2	98.85	5.01	103.2	Supplier-supplied	1	FAIL
AX-2026-042571	HJ-2604-T6645	Janoshik	2026-Q2	98.41	5.34	104.9	Buyer-sourced	0	FAIL

Batch rollup and reproducibility assessment →

Cross-sections

Other recent Ipamorelin records in the index.
Report	Supplier	Lot	Lab	Quarter	Purity %	Water %	Recovery %	Provenance	Flags	Result
AX-2026-041377	QYB	QYB-2605-H3558	Nordanalyt	2026-Q3	99.93	4.35	—	Buyer-sourced	0	PASS
AX-2026-041913	SinoPep	SNP-2606-L4478	PeptideMeter	2026-Q3	98.88	5.28	—	Buyer-sourced	0	FAIL
AX-2026-041914	SinoPep	SNP-2606-L4478	Janoshik	2026-Q3	99.14	5.49	—	Buyer-sourced	0	PASS
AX-2026-041909	SinoPep	SNP-2606-L4478	PeptideMeter	2026-Q3	99.00	5.48	89.5	Buyer-sourced	1	MARGINAL
AX-2026-041895	SinoPep	SNP-2602-B3833	Janoshik	2026-Q3	99.93	4.72	105.9	Buyer-sourced	1	MARGINAL
AX-2026-041898	SinoPep	SNP-2602-B3833	Nordanalyt	2026-Q3	99.93	4.54	96.0	Buyer-sourced	1	MARGINAL
AX-2026-041899	SinoPep	SNP-2602-B3833	PeptideMeter	2026-Q3	99.93	4.96	90.1	Buyer-sourced	1	MARGINAL
AX-2026-041891	SinoPep	SNP-2602-B3833	Janoshik	2026-Q3	99.93	5.11	—	Buyer-sourced	1	MARGINAL

Other recent HJ records in the index.
Report	Compound	Lot	Lab	Quarter	Purity %	Water %	Recovery %	Provenance	Flags	Result
AX-2026-042595	Semaglutide	HJ-2608-C7002	Janoshik	2026-Q3	99.50	3.55	—	Buyer-sourced	1	MARGINAL
AX-2026-042598	Semaglutide	HJ-2608-C7002	Janoshik	2026-Q3	99.59	3.84	—	Buyer-sourced	0	PASS
AX-2026-042605	Semaglutide	HJ-2608-C7002	Janoshik	2026-Q3	99.03	3.37	107.3	Buyer-sourced	0	PASS
AX-2026-042602	Semaglutide	HJ-2608-C7002	Nordanalyt	2026-Q3	99.21	3.50	92.0	Buyer-sourced	0	PASS
AX-2026-042603	Semaglutide	HJ-2608-C7002	Janoshik	2026-Q3	99.16	3.42	105.9	Buyer-sourced	0	PASS
AX-2026-042528	GHRP-6	HJ-2603-R5329	VendorInvestigate	2026-Q3	98.69	1.87	95.8	Buyer-sourced	0	FAIL
AX-2026-042526	GHRP-6	HJ-2603-R5329	Medutest	2026-Q3	99.37	3.06	—	Laboratory-retained	0	PASS
AX-2026-042527	GHRP-6	HJ-2603-R5329	VendorInvestigate	2026-Q3	99.21	2.77	93.2	Buyer-sourced	0	PASS