Verifying TB-500 Fragment means matching the product name, the listed SKU, the nominal size per vial, the vials per pack, and the certificate issued for that SKU and batch. A nearby vial size or a separately listed TB-500 product is not a substitute for those identifiers.
Match SKU, vial size, and pack quantity
The public catalog lists three TB-500 Fragment variants. Each listed SKU is a pack of 10 vials with a stated nominal size per vial. The catalog scope is public listed variants only (at most 40) and is not a claim that the list is exhaustive (TB-500 Fragment).
| SKU code | Nominal size per vial | Vials per pack |
|---|---|---|
| TBF-2 | 2 mg | 10 |
| TBF-5 | 5 mg | 10 |
| TBF-10 | 10 mg | 10 |
Site editorial guidance is to 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, not one vial of 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).
The same product page records molecular formula C38H68N10O14 and molecular weight 889.0. The CAS number is recorded as unknown (TB-500 Fragment).
TB-500 is a different listed product. Its public SKUs are BT2 (2 mg, 10 vials), BT5 (5 mg, 10 vials), and BT10 (10 mg, 10 vials). Do not use a TB-500 SKU or COA as evidence for TB-500 Fragment, or the reverse, even when those catalog molecular formula and molecular weight values match.
If quotation or product documentation uses a different packaging description, ask support to reconcile it before relying on a quantity calculation (per-vial size versus pack quantity).
Locate the COA by SKU and batch
A SKU identifies a listed product variant. A batch number identifies a batch record. Use both when locating a COA: a product name by itself is not enough when several sizes or batches exist. That process is site editorial guidance, not independent scientific evidence (how to find a COA by SKU and batch).
| Identifier | What to compare |
|---|---|
| Product | Exact name: TB-500 Fragment |
| SKU | TBF-2, TBF-5, or TBF-10 |
| Batch | The batch in the document |
| Certificate | The particular issued report |
Open the product page, select the SKU, and read the matching certificate panel. A report for TBF-5 should not be used as evidence for TBF-10 merely because both say TB-500 Fragment. An older published batch is not evidence of the batch that will be shipped next (how to find a COA by SKU and batch).
When a public report 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 support for the current documentation rather than substituting a different batch.
Published TBF-2, TBF-5, and TBF-10 batch results
The figures below are published recorded results for those batches only. They are not evidence of clinical suitability or of every batch. Provider verification links were not independently fetched.
All three reports name the laboratory as Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group) and record test date 2026-08-21 (TBF-2 batch 9QZZSSIHMIWX; TBF-5 batch NK4GFW921X56; TBF-10 batch EY6KFO39HUGI). Appearance on each was Visual, specification White or almost white loose powder, result White loose powder, determination Pass. Shared specifications on the instrumented tests were mass spectrum 889 +/- 1.0 Da (MS); purity NLT 98.0 % (HPLC); peptide content NLT 90.0 % (HPLC); water content NMT 8.0 % (Karl Fischer); bacterial endotoxins NMT 10 EU/mg (LAL (gel-clot)). Actual-fill specifications were the nominal vial sizes of 2 mg, 5 mg, and 10 mg (Gravimetric). Each listed determination below was recorded as Pass.
| SKU and batch | Certificate | Mass spectrum | Purity | Peptide content | Actual fill | Water content | Bacterial endotoxins |
|---|---|---|---|---|---|---|---|
| TBF-2, 9QZZSSIHMIWX | QC-2026-P6ZX2S83G8 | 888.6 Da | 98.6 % | 93.4 % | 2.25 mg | 3.5 % | <3 EU/mg |
| TBF-5, NK4GFW921X56 | QC-2026-23QDPHPMKA | 888.4 Da | 98.8 % | 93.6 % | 5.83 mg | 4.8 % | <3 EU/mg |
| TBF-10, EY6KFO39HUGI | QC-2026-HJTZX7RFJ6 | 888.0 Da | 99.2 % | 93.5 % | 10.77 mg | 4.6 % | <3 EU/mg |
Analyte names on the test rows are TB-500 Fragment TBF-2, TB-500 Fragment TBF-5, and TB-500 Fragment TBF-10 respectively. Summary identity, purity, weight, and endotoxin figures on those pages match the mass-spectrum, purity, actual-fill, and endotoxin results in the table.
Nominal catalog size and gravimetric actual fill are different fields. The recorded fills apply only to the named batches. Endotoxin results are the recorded LAL (gel-clot) values; they are not a sterility claim or evidence that unlisted analytes were tested. Unknown tests are not zero, pass, or evidence of absence.
Verify the certificate against the original report
Start 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. This sequence is site editorial guidance (how to verify a CertiPeptide COA).
- Read the product and SKU from the product page or your order documentation.
- Find the batch. 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.
Do not substitute a report for a similar product or a different size. Send support the SKU, batch number, and the specific difference. A screenshot of a certificate is useful for comparison, but the original document and provider record are stronger verification evidence. A published report does not mean every order receives that batch; confirm the batch allocated to the order separately (how to verify a CertiPeptide COA).
Verification checklist
- Product name is TB-500 Fragment, not TB-500.
- SKU is TBF-2, TBF-5, or TBF-10 and matches the ordered size.
- Nominal size per vial and 10 vials per pack are read as separate fields.
- Batch number and certificate number match the opened report.
- Test date, laboratory name, analyte, methods, units, and determinations match the original document.
- Actual fill is taken from the batch gravimetric result, not from pack-sum arithmetic.
- A missing report is treated as unknown, not as pass or fail.
Frequently Asked Questions
Does a published TB-500 Fragment report 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.
Can a TB-500 COA (BT2, BT5, or BT10) stand in for TB-500 Fragment?
No. TB-500 and TB-500 Fragment are separately listed products with different SKU codes. A report for one product or size should not be used as evidence for the other.
Does 10 mg × 10 vials mean one vial of 100 mg?
No. That description is ten vials with a nominal size of 10 mg each. The pack sum is label arithmetic, not an analytical measurement. Actual fill belongs to the batch report.
What if a public COA is missing for my SKU or batch?
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.
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.
