What is a catalog number?
A catalog number is a code a supplier uses to identify a product in its catalog. It helps you find the intended catalog entry and refer to it in a quote or order. It does not, by itself, identify a production lot, state a test result or confirm current availability.
On NorthVerity, the SKU and the catalog number are normally the same product code. CU50 is an example. Use that code in catalog search or the “Paste a product list” field when preparing your quote list. Keep the displayed name and specification with it: a code identifies the intended catalog entry, while the written product details explain what that entry contains.
Other suppliers may organize codes differently. When comparing offers, match the material name, form and package description rather than assuming that identical-looking codes identify equivalent items.
| Identifier | What it identifies | What to check |
|---|---|---|
| Catalog number | A supplier’s catalog entry; CU50 is one NorthVerity example. | Keep the product name and listed specification with the code. Codes are not universal across suppliers. |
| SKU | A stock-keeping code. On NorthVerity, it normally uses the same product code as the catalog number. | Use CU50 to locate the listed GHK-Cu configuration; confirm the amount and vial count separately. |
| CAS number | A chemical substance record, rather than a supplier’s package or inventory lot. | Compare the verified chemical identity and form; a CAS number does not identify a pack quantity or a tested lot. |
| Lot number | A particular batch, recorded separately from the catalog entry. | Match the lot offered in the quote to its documents. A reference-report sample lot does not establish the lot you will receive. |
Read the CU50 example as a complete pack
The CU50 entry names GHK-Cu and lists the specification below. Read the amount and vial count together before selecting a pack quantity. The catalog code helps locate this configuration; the written specification remains the place to check what you are requesting.
- Product name: GHK-Cu.
- Listed specification: 50 mg × 10 vials.
- Quote basis: one complete listed pack, not one vial.
- Order quantity: the number of complete packs requested.
Keep the lot number on the lot documents
A lot number identifies a particular batch, and it appears on the corresponding lot documents. The BPC 157 10 mg report BC10-20260908S6179, for example, prints lot 5828704. That lot number is separate from the catalog number: the report number and the sample name (BC10/BPC157) carry the catalog code BC10, but only the lot number identifies the batch. A code on a report does not establish which lot will be offered with a new quote.
Each report covers only the sample and batch printed on it. Verify it on the issuer’s website and check that the lot number matches the goods you receive.
Distinguish catalog codes from chemical identifiers
A CAS number identifies a substance record, while a PubChem CID points to a database compound record. Those fields appear in the compound profile where verified. Neither replaces the supplier’s product code or the lot number. A sequence or chemical-form note can help you compare identity, but it does not state the package quantity or connect a reference report to a shipment.
Carry the code from request to receipt
Before completing your purchasing review, compare the product details across the catalog entry, quote, lot documents and available receiving records. Preserve meaningful characters rather than shortening identifiers. If a code is missing or changes between documents, ask for a written explanation of how the records refer to the intended product.
Ask for the documents for the exact lot in your quote. A report describes only the batch it tested, so check that its lot number matches the lot you receive.
Prices are not listed on the site. Send your quote list and we confirm price, availability and delivery in a written quote.
- Match the exact product code and name.
- Check the amount, units and listed vial count together.
- Confirm that the requested quantity counts complete packs.
- Record the lot separately and compare it with the corresponding documents.
- Keep clarification of any changed or missing identifier with the quote.
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