Cefaclor Impurity 33 CAS 188915-45-9
CAS 188915-45-9
Cat. no. C4X-127033 Formula C15H14ClN3O5S
MW 383.81
In stock
Antibiotic impurities and related substances are controlled because they can alter potency, safety or the impurity profile of the finished product. Laboratories use them to identify and quantify the species that appear in a related-substances or stability-indicating method, and to demonstrate that the method separates everything the specification limits. The material supplied here is documented lot by lot, so the analytical value used in a calculation can be traced back to a certificate.
Cefaclor Impurity 33 (CAS 188915-45-9), molecular formula C15H14ClN3O5S and molecular weight 383.81. Selected pack sizes are held in stock. Send the impurity designation, the method and the quantity required and we will come back with availability, documentation and lead time.
Part of Antibiotic impurity standards — 66 items in this group.
Specification
- Catalogue number
- C4X-127033
- CAS number
- 188915-45-9
- Molecular formula
- C15H14ClN3O5S
- Molecular weight
- 383.81
- Appearance
- White to Off-White Solid
- Storage
- -20℃±5℃
- Shipping
- Shipping with Ice Packs
- Country of origin
- China
- Pack sizes
- 10 mg, 25 mg, 50 mg
This is the product specification. Typical purity and assay values are those measured on a released lot and stated on that lot’s certificate of analysis; the certificate for the lot shipped with your order travels with the goods. A specification sheet and a certificate of analysis are different documents and are not interchangeable. The certificate for the current lot opens from the link above.
Pack sizes and lead time
| Pack size | Availability | Quote |
|---|---|---|
| 10 mg | In stock | Request quote |
| 25 mg | In stock | Request quote |
| 50 mg | 10 days | Request quote |
Content and purity for each pack size are stated per lot on the certificate of
analysis. Other pack sizes are available on request. Prices are quoted per enquiry so that pack size, documentation and shipping requirements can be confirmed together — no price is published on this site.
What the documents contain
- Certificate of analysis — issued per lot: catalogue and lot number, the value assigned to the material and the analytical basis for it.
- Safety data sheet — supplied for the catalogue item, and the basis for the transport classification used on the shipment.
- Storage and shipping conditions for this item: -20℃±5℃, Shipping with Ice Packs.
Frequently asked questions
Is a certificate of analysis (COA) available for Cefaclor Impurity 33?
Yes. A batch-specific COA and the MSDS are issued for every lot of Cefaclor Impurity 33 (catalogue number C4X-127033). Use the COA link on this page, or email chao.lu@cato-chem.com with the lot number printed on your label and we will send the matching document.
What pack sizes and lead times are offered?
Pack sizes 10 mg, 25 mg are held in stock and typically ship within 1–2 working days Other sizes (50 mg) are quoted with a lead time of approximately 10 days.
How is the purity of Cefaclor Impurity 33 documented?
Purity is determined per batch and stated on the certificate of analysis together with the analytical data used for its assignment. If your method requires a specific grade or a particular pharmacopoeial naming, tell us the requirement when you enquire and we will confirm suitability.
Can you supply a larger quantity or a custom synthesis?
Yes. Quantities above the listed pack sizes are quoted on request, and custom synthesis or isolation from related starting materials can be discussed for compounds not held in stock. Contact chao.lu@cato-chem.com with the target quantity and required delivery date.
How is Cefaclor Impurity 33 shipped?
Shipping conditions for this item: Shipping with Ice Packs. Shipments are packed to maintain the specified storage condition, and the SDS is provided for transport classification.
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