1. One record per format, not per product name
“Semaglutide” is not a specification. A sellable record is a single configuration: product, presentation (for example 10 mg × 10 vials) and an internal catalogue reference that stays the same through quotation, order, batch allocation and delivery. If two similar formats share a supplier code, that is where mix-ups start — the reference is what resolves it.
2. What a Certificate of Analysis should show
A COA is only useful if it is tied to the vial in the box. Check that it states:
- The exact product and format — name and, where applicable, sequence or molecular formula.
- A batch or lot number that matches the number on your order confirmation and the packaging.
- The analytical method — typically HPLC for purity, with the reported purity figure, and mass spectrometry for identity.
- Report date and issuing laboratory, so the document can be verified rather than taken on trust.
- Storage and handling notes for the format you are holding.
3. Ask for the batch that will actually ship
Two things go wrong most often: a COA arrives for a different batch to the one dispatched, or the document is a generic template with no batch linkage at all. When you place a forward order, ask for the document set for the allocated batch — not a sample from an earlier run. A supplier who cannot answer that question quickly is a supplier who will cost you a customer later.
4. How to present it to your buyer
Keep it boring and repeatable. One page per configuration: reference, format, price, batch number, and the attached COA/HPLC/MS files. Ship the document set with the tracking number rather than after the buyer asks. Exporters who do this consistently report fewer payment delays and fewer “what exactly did I receive?” conversations — because the answer is already in the file.
5. Red flags worth pausing on
- Purity claims with no method, or “99%” repeated across every product in a list.
- Batch numbers that change after payment without explanation.
- No fixed catalogue references, so reorders cannot be matched to earlier supply.
- Documents that arrive only after complaints.
6. What we provide with every Sequence One order
Every configuration carries its own reference, is matched to a batch, and is delivered with the batch documentation — COA, HPLC and MS records — plus complimentary BAC water and a flat worldwide shipping rate. Sample records are available on request before you commit to an order.