To verify a listed VIP (Vasoactive Intestinal Peptide) item, start with the catalog SKU, per-vial size, and vials per pack, then match a published certificate of analysis (COA) to that same SKU and a specific batch number. Catalog fields are nominal listing facts; COA rows apply only to the named tested batch and SKU.
Catalog identity, SKUs, and pack quantity
The public product listing names VIP (Vasoactive Intestinal Peptide) and records CAS number 40077-57-4, molecular formula C147H237N43O43S, and molecular weight 3326.8. Two public listed variants appear there: SKU VP5 with a nominal size of 5 mg per vial and 10 vials per pack, and SKU VP10 with a nominal size of 10 mg per vial and 10 vials per pack. That table covers public listed variants only and is not a claim that the list is exhaustive (VIP product listing).
Read per-vial size, vials per pack, and pack price as three separate fields. A label such as 10 mg × 10 vials describes ten vials with a nominal size of 10 mg each; it is not a single vial containing 100 mg. The pack sum is label arithmetic, not an analytical measurement. Actual fill and peptide-content measurements belong to the particular batch report (per-vial size versus pack quantity).
| SKU | Nominal size per vial | Size unit | Vials per pack |
|---|---|---|---|
| VP5 | 5 | mg | 10 |
| VP10 | 10 | mg | 10 |
VP5 is ten vials at 5 mg each. VP10 is ten vials at 10 mg each, not one 100 mg vial. Those pack readings come from listed fields, not from COA fill weights (VIP product listing; per-vial size versus pack quantity).
Before ordering, match the exact product and SKU, check the per-vial size and unit, check vials per pack, set the number of packs required, and review matching batch records. If a quotation uses a different packaging description, ask support to reconcile it before relying on the calculation. Selecting a different SKU can change pack price and available stock; a saved screenshot can become outdated when prices or availability change (per-vial size versus pack quantity).
Match SKU, batch, and certificate before using a COA
A SKU identifies a listed product variant. A batch number identifies a batch record. Use both: a product name alone is not enough when several sizes or batches exist. Compare product name, SKU, batch, and certificate number. A report for one size should not be used as evidence for another size merely because both share the product name. An older published batch is not evidence of the batch that will be shipped next. A missing public result is not automatically a failed test, and it is not a passed test either (how to find a COA by SKU and batch).
Start verification by matching product name, SKU, and batch number. Open the original report and compare certificate number and test date with the summary, then use the report-specific verification link. A verification page may require an account with the report provider; seeing a link alone does not prove that a report is currently valid. If the allocated batch is not stated, ask support to confirm it. If details differ, do not substitute a report for a similar product or a different size. Send support the SKU, batch number, and the specific difference. A published report does not mean every order receives that batch (how to verify a CertiPeptide COA).
Two published VIP records show how SKU and COA must line up. They are recorded results for those batches only. Provider verification links were not independently fetched. They are not evidence of clinical suitability or of every batch.
VP5 batch XBT3Z8TIW0B3. SKU VP5 (5 mg), certificate QC-2026-CB2M5THTL8, laboratory Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group), test date 2026-05-01. Summary values: identity 3326.5 Da; purity 99.0 %; weight 5.56 mg; endotoxin <3 EU/mg (VP5 batch XBT3Z8TIW0B3).
| Item | Analyte | Method | Specification | Result | Determination |
|---|---|---|---|---|---|
| Appearance | VIP (Vasoactive Intestinal Peptide) VP5 | Visual | White or almost white loose powder | White loose powder | Pass |
| Mass spectrum | VIP (Vasoactive Intestinal Peptide) VP5 | MS | 3326.8 +/- 1.0 Da | 3326.5 Da | Pass |
| Purity | VIP (Vasoactive Intestinal Peptide) VP5 | HPLC | NLT 98.0 % | 99.0 % | Pass |
| Peptide content | VIP (Vasoactive Intestinal Peptide) VP5 | HPLC | NLT 90.0 % | 92.4 % | Pass |
| Actual fill | VIP (Vasoactive Intestinal Peptide) VP5 | Gravimetric | 5 mg | 5.56 mg | Pass |
| Water content | VIP (Vasoactive Intestinal Peptide) VP5 | Karl Fischer | NMT 8.0 % | 3.2 % | Pass |
| Bacterial endotoxins | VIP (Vasoactive Intestinal Peptide) VP5 | LAL (gel-clot) | NMT 10 EU/mg | <3 EU/mg | Pass |
VP10 batch VMK5D5K60U6G. SKU VP10 (10 mg), certificate QC-2026-KBD6DYU3UR, laboratory Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group), test date 2026-05-01. Summary values: identity 3325.9 Da; purity 99.2 %; weight 10.57 mg; endotoxin <3 EU/mg (VP10 batch VMK5D5K60U6G).
| Item | Analyte | Method | Specification | Result | Determination |
|---|---|---|---|---|---|
| Appearance | VIP (Vasoactive Intestinal Peptide) VP10 | Visual | White or almost white loose powder | White loose powder | Pass |
| Mass spectrum | VIP (Vasoactive Intestinal Peptide) VP10 | MS | 3326.8 +/- 1.0 Da | 3325.9 Da | Pass |
| Purity | VIP (Vasoactive Intestinal Peptide) VP10 | HPLC | NLT 98.0 % | 99.2 % | Pass |
| Peptide content | VIP (Vasoactive Intestinal Peptide) VP10 | HPLC | NLT 90.0 % | 92.8 % | Pass |
| Actual fill | VIP (Vasoactive Intestinal Peptide) VP10 | Gravimetric | 10 mg | 10.57 mg | Pass |
| Water content | VIP (Vasoactive Intestinal Peptide) VP10 | Karl Fischer | NMT 8.0 % | 5.8 % | Pass |
| Bacterial endotoxins | VIP (Vasoactive Intestinal Peptide) VP10 | LAL (gel-clot) | NMT 10 EU/mg | <3 EU/mg | Pass |
Gravimetric actual-fill rows (5.56 mg on VP5; 10.57 mg on VP10) are batch measurements, not replacements for catalog nominal size. Peptide content (92.4 % on VP5; 92.8 % on VP10) is a separate HPLC row from purity. Bacterial endotoxin results are LAL (gel-clot) values against NMT 10 EU/mg; they are not a sterility determination. Water content was recorded by Karl Fischer (3.2 % on VP5; 5.8 % on VP10) against NMT 8.0 %. Mass-spectrum results sit inside the listed 3326.8 +/- 1.0 Da window on these two batches.
Verification checklist
- Confirm the product name VIP (Vasoactive Intestinal Peptide) and the SKU (VP5 or VP10) on the product listing.
- Record nominal size per vial (5 mg or 10 mg) and vials per pack (10 for both listed SKUs). Do not treat the pack sum as a single-vial fill.
- Locate the batch number and certificate number for the allocated lot; do not reuse a VP5 record for VP10 or the reverse (find a COA by SKU and batch).
- Open the batch page and compare certificate number, sample identity, test date, laboratory name, methods, units, and determinations with the original report (how to verify a CertiPeptide COA).
- Treat published examples such as XBT3Z8TIW0B3 and VMK5D5K60U6G as those batches only. Confirm the batch allocated to an order separately.
- If a public result is missing or a previously shared link is unavailable, ask support for current SKU and batch documentation rather than substituting a different batch.
These knowledge pages are site editorial guidance for reading catalog and batch records, not independent scientific evidence beyond the tests recorded on each named COA.
Frequently Asked Questions
Does a published VIP COA mean every order receives that batch?
No. Confirm the batch allocated to the order separately. A published report is not evidence of the batch that will be shipped next.
Can a VP5 COA be used as evidence for VP10?
No. A report for one size should not be used as evidence for another size merely because both are listed as VIP (Vasoactive Intestinal Peptide). Match SKU as well as product name and batch.
What does 10 mg × 10 vials mean for SKU VP10?
It describes ten vials with a nominal size of 10 mg each. It is not a single vial containing 100 mg. Per-vial size, vials per pack, and pack price are separate fields. Actual fill belongs to the particular batch report.
What if a public VIP report is missing?
A missing public result is not automatically a failed test, and it is not a passed test either. Ask support for the exact SKU and batch rather than substituting a different batch.
What if the COA verification provider requires a login?
Use the provider’s normal access process. Seeing a verification link alone does not prove that a report is currently valid, and the site does not independently confirm the current status of a login-protected record.
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.

