Cefixime impurities and related standards

11 reference standards related to Cefixime held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.

CAS numbers are listed for 11 of 11; 8 entries carry a structure drawing.

Cefixime — related standards
Compound	CAS No.	Catalogue No.	Formula	MW
Cefixime Impurity 11	1335555-87-7	RS-C079004	C16H15N5O8S2	469.45
Cefixime Impurity A	1614255-90-1	RS-C079005	C16H17N5O8S2	471.46
Cefixime EP Impurity E	72701-01-0	RS-C079007	C15H15N5O7S2	441.44
Cefixime Impurity 19	79368-92-6	RS-C079008	C20H23N5O7S2	509.56
Cefixime Impurity F	79368-95-9	RS-C079009	C18H19N5O7S2	481.5
Cefixime Impurity 9	88621-01-6	RS-C079010	C17H17N5O7S2	467.48
Cefixime EP Impurity D	97164-56-2	RS-C079011	C16H15N5O7S2	453.45
Cefixime Impurity B(EP)	1335475-19-8	RS-C079003	C15H17N5O6S2	427.45
Cefixime EP Impurity C	108691-83-4	RS-C079001	C16H15N5O7S2	453.45
Cefixime Impurity 24	33748-00-4	RS-C079006	C17H16N2O4S	344.38
Cefixime Impurity 20	128012-77-1	RS-C079002	C16H15N5O7S2	453.44

Structures

Cefixime Impurity 11

CAS 1335555-87-7RS-C079004
COA per lot
Cefixime Impurity A

CAS 1614255-90-1RS-C079005
COA per lot
Cefixime EP Impurity E

CAS 72701-01-0RS-C079007
COA per lot
Cefixime Impurity 19

CAS 79368-92-6RS-C079008
COA per lot
Cefixime Impurity F

CAS 79368-95-9RS-C079009
COA per lot
Cefixime Impurity 9

CAS 88621-01-6RS-C079010
COA per lot
Cefixime EP Impurity D

CAS 97164-56-2RS-C079011
COA per lot
Cefixime Impurity B(EP)

CAS 1335475-19-8RS-C079003
COA per lot

Frequently asked

How many Cefixime-related reference standards do you hold?

11 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 11 of them and 8 entries carry a structure drawing. The catalogue is extended as new lots are released.

Can you supply a Cefixime impurity that is not listed here?

Yes. Non-compendial impurities can be quoted from a structure — a CAS number is not required. Send the structure, a SMILES string or the parent drug substance with your enquiry and we will come back with availability.

What documentation is supplied with Cefixime impurities?

Every lot ships with its own certificate of analysis. The certificate records the catalogue number, the batch number, the tests performed, the specification applied and the result obtained for that lot. A safety data sheet is supplied with the shipment.

Do you publish prices or a lead time for Cefixime impurities?

No price list is published: quotations are prepared per enquiry, because availability and packing depend on the lot and the quantity you need. Send the catalogue number and the quantity and a technical contact will answer with availability and a quotation.

Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to [email protected].