Dexamethasone EP Impurity K
CAS 1809224-82-5
Cat. no. C4X-116511 Formula C22H26O4
MW 354.44
In stock
Dexamethasone EP Impurity K is a related substance of the synthetic corticosteroid dexamethasone, a potent anti-inflammatory and immunosuppressant used in a wide range of injectable, oral and topical products. The impurity has the molecular formula C22H26O4 and a molecular weight of 354.44, and it is one of the defined peaks that related-substance testing of dexamethasone must be able to resolve and identify. Analytical groups therefore keep it on hand for method development and validation, for spiking experiments that establish resolution and selectivity, and for preparing calibration standards used in impurity quantitation and stability-indicating assays. It is a yellow solid; storage at -20°C ± 5°C is advised and shipping is carried out with ice packs. Available pack sizes span 5 mg, 10 mg, 15 mg, 20 mg, 25 mg, 30 mg, 50 mg, 70 mg, 100 mg, 110 mg, 120 mg, 150 mg, 180 mg and 225 mg. Contact the team to request a quote or the supporting documents.
Also known as
Dexamethasone Impurity K. Further pharmacopoeial and trivial names are recorded on the certificate of analysis.
Pack sizes and lead time
| Pack size | Availability | Quote |
|---|---|---|
| 5 mg | In stock | |
| 10 mg | In stock | |
| 15 mg | In stock | |
| 20 mg | In stock | |
| 25 mg | In stock | |
| 30 mg | In stock | |
| 50 mg | In stock | |
| 70 mg | In stock | |
| 100 mg | In stock | |
| 110 mg | In stock | |
| 120 mg | In stock | |
| 150 mg | On request | |
| 180 mg | 10 days | |
| 225 mg | 10 days |
Content and purity for each pack size are stated per lot on the certificate of
analysis. 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 Dexamethasone EP Impurity K?
Yes. A batch-specific COA and the MSDS are issued for every lot of Dexamethasone EP Impurity K (catalogue number C4X-116511). 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 5 mg, 10 mg, 15 mg, 20 mg, 25 mg, 30 mg, 50 mg, 70 mg, 100 mg, 110 mg, 120 mg are held in stock and typically ship within 1–2 working days Other sizes (180 mg, 225 mg) are quoted with a lead time of approximately 10 days.
How is the purity of Dexamethasone EP Impurity K documented?
Purity is determined per batch and stated on the COA 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 Dexamethasone EP Impurity K 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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