To verify a Gonadorelin catalog item, match four identifiers separately: the exact SKU, the nominal size per vial, the number of vials in the pack, and the batch certificate of analysis (COA) issued for that SKU. A product name by itself is not enough when several sizes exist. Listed sizes are nominal catalog facts. Identity, purity, fill, peptide content, water, and endotoxin figures apply only to the named tested batch and SKU.
Match the SKU, vial size, and pack quantity
The public Gonadorelin page lists CAS number 33515-09-2, molecular formula C55H75N17O13, and molecular weight 1182.3. Two public SKUs are shown. That SKU scope is public listed variants only, at most 40, and is not a claim that the list is exhaustive (Gonadorelin product page).
| SKU | Nominal size per vial | Vials per pack |
|---|---|---|
| GND2 | 2 mg | 10 |
| GND5 | 5 mg | 10 |
Site guidance on reading a product SKU treats per-vial size, vials per pack, and pack price as three separate fields. A listed milligram amount times ten vials describes ten vials at that nominal size each; it is not a single vial holding the arithmetic total. The sum across one pack is label arithmetic, not an analytical measurement. Actual fill and peptide-content measurements belong to the particular batch report.
Check before ordering: match the exact product and SKU; check the per-vial size and unit; check the number of vials per pack; set the number of packs required; and review the matching batch records and order details. If a quotation or other documentation uses a different packaging description, ask support to reconcile it before relying on the calculation.
Locate the COA with SKU and batch number
A SKU identifies a listed product variant. A batch number identifies a batch record. Guidance on finding a COA is to use both. Compare product name, SKU, batch, and certificate number. Open the product page, select the SKU, and read the matching certificate panel. Selecting a SKU updates the report. A batch fixed page is the published summary to share.
Do not use a GND2 report as evidence for GND5, or the reverse, merely because both are labeled Gonadorelin. An older published batch is not evidence of the batch that will be shipped next. If a public result is missing, ask support for the exact SKU and batch. A missing public result is not automatically a failed test, and it is not a passed test either. If a previously shared report link is no longer available, ask for the current documentation rather than substituting a different batch.
Published batch records for GND2 and GND5
Two published COAs show how SKU, size, and batch must line up. Each record states its scope as published recorded results for that batch only. Provider verification links were not independently fetched. Neither record is evidence of clinical suitability or of every batch.
GND2 — batch BJ34MCBWEOCI. Certificate QC-2026-JC8GZLT7SV, laboratory Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group), test date 2026-08-15, SKU GND2 at 2 mg. Summary values: identity 1181.7 Da; purity 98.7 %; weight 2.35 mg; endotoxin <3 EU/mg. Analyte on each test row is Gonadorelin GND2 (BJ34MCBWEOCI batch page).
| Item | Method | Specification | Result | Determination |
|---|---|---|---|---|
| Appearance | Visual | White or almost white loose powder | White loose powder | Pass |
| Mass spectrum | MS | 1182.3 +/- 1.0 Da | 1181.7 Da | Pass |
| Purity | HPLC | NLT 98.0 % | 98.7 % | Pass |
| Peptide content | HPLC | NLT 90.0 % | 90.8 % | Pass |
| Actual fill | Gravimetric | 2 mg | 2.35 mg | Pass |
| Water content | Karl Fischer | NMT 8.0 % | 5.1 % | Pass |
| Bacterial endotoxins | LAL (gel-clot) | NMT 10 EU/mg | <3 EU/mg | Pass |
GND5 — batch 01I3M168XTQ0. Certificate QC-2026-MZKFH34PZB, laboratory Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group), test date 2026-08-15, SKU GND5 at 5 mg. Summary values: identity 1181.7 Da; purity 99.3 %; weight 5.46 mg; endotoxin <3 EU/mg. Analyte on each test row is Gonadorelin GND5 (01I3M168XTQ0 batch page).
| Item | Method | Specification | Result | Determination |
|---|---|---|---|---|
| Appearance | Visual | White or almost white loose powder | White loose powder | Pass |
| Mass spectrum | MS | 1182.3 +/- 1.0 Da | 1181.7 Da | Pass |
| Purity | HPLC | NLT 98.0 % | 99.3 % | Pass |
| Peptide content | HPLC | NLT 90.0 % | 92.8 % | Pass |
| Actual fill | Gravimetric | 5 mg | 5.46 mg | Pass |
| Water content | Karl Fischer | NMT 8.0 % | 4.1 % | Pass |
| Bacterial endotoxins | LAL (gel-clot) | NMT 10 EU/mg | <3 EU/mg | Pass |
Nominal catalog fill is 2 mg for GND2 and 5 mg for GND5. The gravimetric results above are batch-specific and are not a substitute for another lot.
Verify the certificate, then note the gaps
How to verify a CertiPeptide COA starts by matching product name, SKU, and batch number. Open the original report and compare its certificate number and test date with the summary, then use the verification link for that report. A verification page may require an account with the report provider. Seeing a link alone does not prove that a report is currently valid.
- Read the product and SKU from the product page or order documentation.
- Find the batch in lab reports. If the allocated batch is not stated, ask support to confirm it.
- Open the batch page and check the certificate number, sample identity, test date, and listed laboratory.
- Open the original report and compare the values and units with the summary.
- Follow the report-specific verification link. If the provider requests login or the record cannot be confirmed, resolve that with the provider or support before treating the verification as complete.
A published report does not mean every order receives that batch. Confirm the batch allocated to the order separately. Do not substitute a report for a similar product or a different size. When details differ, send support the SKU, batch number, and the specific difference. A screenshot can help comparison; the original document and provider record are stronger verification evidence.
| Check | What to confirm |
|---|---|
| Product | Gonadorelin |
| SKU | GND2 or GND5 as listed |
| Per-vial size | 2 mg or 5 mg, not the pack sum |
| Pack quantity | 10 vials per listed pack |
| Batch | The allocated batch, not only a published example |
| Certificate | Number, test date, laboratory, and analyte |
| Methods and units | Copied exactly from the named COA |
| Verification link | Followed; login-protected status not assumed |
Unlisted tests are not shown as performed. These records do not assign storage temperatures, shipping terms, or suitability for human or veterinary use. The two COAs document those named batches only.
Frequently Asked Questions
What Gonadorelin SKUs are publicly listed?
The public product page lists GND2 at 2 mg per vial with 10 vials per pack, and GND5 at 5 mg per vial with 10 vials per pack. That list is public listed variants only, at most 40, and is not a claim that it is exhaustive.
Can a GND2 COA be used as evidence for GND5?
No. A report for one size should not be used as evidence for another size merely because both are labeled Gonadorelin. Published examples are batch BJ34MCBWEOCI for GND2 and batch 01I3M168XTQ0 for GND5.
Does a published Gonadorelin COA mean every order receives that batch?
No. Confirm the batch allocated to the order separately. An older published batch is not evidence of the batch that will be shipped next.
What should I match when verifying a Gonadorelin COA?
Match product name, SKU, and batch number, then compare certificate number, sample identity, test date, listed laboratory, and the values and units on the original report. Seeing a verification link alone does not prove that a report is currently valid.
Explore Further
Browse our research peptide catalog and review third-party lab reports & COAs for published batches.
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Research use only. The information above is provided for educational and laboratory research purposes only. The compounds discussed are not approved for human or veterinary use, diagnosis, treatment, or the prevention of any disease. Nothing here is medical advice.
