To verify an Orexin A listing, match the exact SKU to the nominal per-vial size and the number of vials in the pack, then confirm that any certificate of analysis (COA) names that same SKU and a specific batch. Catalog pack fields are not analytical measurements, and a published COA applies only to the tested SKU and batch on that report.
Listed SKUs, vial size and pack quantity
The public Orexin A product page lists CAS 205640-90-0, molecular formula C152H243N47O44S4 and molecular weight 3561.1. Two public SKUs are shown: OA5 (nominal 5 mg per vial, 10 vials per pack) and OA10 (nominal 10 mg per vial, 10 vials per pack). That list is described as public listed variants only; it is not a claim that the list is exhaustive.
| SKU | Nominal size per vial | Vials per pack |
|---|---|---|
| OA5 | 5 mg | 10 |
| OA10 | 10 mg | 10 |
Site guidance on reading a product SKU treats per-vial size, vials per pack and pack price as three separate fields. A label such as 10 mg × 10 vials means ten vials with a nominal size of 10 mg each, not one vial containing 100 mg. The pack sum is label arithmetic, not an analytical measurement. Actual fill and peptide-content values belong to the particular batch report.
Pre-order checks from that guidance: 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 matching batch records. If a quotation uses a different packaging description, 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 A saved screenshot can become outdated when prices or availability change.
How to find and verify a batch COA
A SKU identifies a listed product variant. A batch number identifies a batch record. Finding a COA requires both, because a product name alone is not enough when several sizes or batches exist. Compare product name, SKU, batch and certificate number. Open the product page, select the SKU, and read the matching certificate panel. Open a batch's fixed page to share results, and match the original document before relying on it.
Do not use an OA5 report as evidence for OA10 merely because both are labeled Orexin A. An older published batch is not evidence of the batch that will be shipped next. A missing public result is not a failed test and is not a passed test. If a previously shared report link is no longer available, ask support for the current documentation rather than substituting a different batch.
COA verification guidance starts by matching product name, SKU and batch number, then comparing certificate number and test date with the original report, then using that report's verification link. Seeing a link alone does not prove that a report is currently valid. A verification page may require an account with the report provider, and the website does not independently confirm the current status of a login-protected record. A published report does not mean every order receives that batch; confirm the allocated batch separately.
Suggested sequence from that guidance:
- 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 login is required or the record cannot be confirmed, resolve that before treating 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 is useful for comparison, but the original document and provider record are stronger evidence.
Published OA5 and OA10 COA examples
The records below are published results for those batches only. Provider verification links were not independently fetched. They are not evidence of clinical suitability or of every batch.
OA5 batch 3Y80MYP6GCLL carries certificate QC-2026-RE3KXLKVH4, test date 2026-05-15, laboratory Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group), and SKU OA5 at 5 mg. Summary values: identity 3560.5 Da; purity 99.7 %; weight 5.25 mg; endotoxin <3 EU/mg.
| Item | Analyte | Method | Specification | Result | Determination |
|---|---|---|---|---|---|
| Appearance | Orexin A OA5 | Visual | White or almost white loose powder | White loose powder | Pass |
| Mass spectrum | Orexin A OA5 | MS | 3561.1 +/- 1.0 Da | 3560.5 Da | Pass |
| Purity | Orexin A OA5 | HPLC | NLT 98.0 % | 99.7 % | Pass |
| Peptide content | Orexin A OA5 | HPLC | NLT 90.0 % | 90.7 % | Pass |
| Actual fill | Orexin A OA5 | Gravimetric | 5 mg | 5.25 mg | Pass |
| Water content | Orexin A OA5 | Karl Fischer | NMT 8.0 % | 3.4 % | Pass |
| Bacterial endotoxins | Orexin A OA5 | LAL (gel-clot) | NMT 10 EU/mg | <3 EU/mg | Pass |
OA10 batch MBNA9TTOBSPF carries certificate QC-2026-D2MSGWMNZZ, test date 2026-05-15, laboratory Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group), and SKU OA10 at 10 mg. Summary values: identity 3560.3 Da; purity 99.3 %; weight 11.12 mg; endotoxin <3 EU/mg.
| Item | Analyte | Method | Specification | Result | Determination |
|---|---|---|---|---|---|
| Appearance | Orexin A OA10 | Visual | White or almost white loose powder | White loose powder | Pass |
| Mass spectrum | Orexin A OA10 | MS | 3561.1 +/- 1.0 Da | 3560.3 Da | Pass |
| Purity | Orexin A OA10 | HPLC | NLT 98.0 % | 99.3 % | Pass |
| Peptide content | Orexin A OA10 | HPLC | NLT 90.0 % | 91.0 % | Pass |
| Actual fill | Orexin A OA10 | Gravimetric | 10 mg | 11.12 mg | Pass |
| Water content | Orexin A OA10 | Karl Fischer | NMT 8.0 % | 3.7 % | Pass |
| Bacterial endotoxins | Orexin A OA10 | LAL (gel-clot) | NMT 10 EU/mg | <3 EU/mg | Pass |
On these two lots, gravimetric actual fill is recorded as 5.25 mg against a 5 mg specification on OA5 and 11.12 mg against a 10 mg specification on OA10. Peptide content is a separate HPLC result (90.7 % and 91.0 %) from purity (99.7 % and 99.3 %). Bacterial endotoxins are recorded as <3 EU/mg against NMT 10 EU/mg by LAL (gel-clot). That recorded result is not a sterility claim.
Checklist
- Match product name Orexin A and SKU OA5 or OA10 on the product page.
- Confirm nominal size per vial (5 mg or 10 mg) and 10 vials per pack; do not treat pack-sum arithmetic as measured fill.
- Locate the batch page and match SKU, batch number, certificate number, test date and laboratory.
- Compare each analyte, method, specification, result, unit and determination with the original report; keep OA5 and OA10 records separate.
- Treat a verification link as incomplete until the provider record can be confirmed.
- If a public report is missing, ask support for the exact SKU and batch rather than substituting another lot.
These examples document two published lots. They do not show which batch will be allocated to a later order.
Frequently Asked Questions
Does an OA5 COA count as evidence for OA10?
No. A report for OA5 should not be used as evidence for OA10 merely because both are labeled Orexin A. Match the listed SKU as well as the product name.
Does a published Orexin A 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.
How should OA10 packaging of 10 mg and 10 vials be read?
OA10 is listed as a nominal 10 mg per vial with 10 vials per pack. That describes ten vials of 10 mg each, not one vial containing 100 mg. The pack sum is label arithmetic, not an analytical measurement.
What if no public COA is listed for my 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. Do not substitute a different batch.
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.
