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Famotidine impurities and related standards

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

CAS numbers are listed for 8 of 8; 4 entries carry a structure drawing.

Famotidine — related standards
CompoundCAS No.Catalogue No.FormulaMW
Famotidine Impurity C(EP) 106433-44-7 RS-F008002 C8H14N6O3S3 338.42
Famotidine EP Impurity E 129083-44-9 RS-F008006 C10H14N8S4 374.53
Famotidine EP Impurity D 76824-16-3 RS-F008007 C8H13N5Os2 259.35
Famotidine Impurity 2 95907-34-9 RS-F008008 C5H9ClN4OS 208.7
Famotidine EP Impurity I 1020719-36-1 RS-F008001 C8H14N6O4S3 354.43
Famotidine Impurity 13(Hydrochloride) 106649-95-0 RS-F008003 C3H8ClN3O2S.HCl 185.63
Famotidine EP Impurity H 106649-96-1 RS-F008004 C6H10N6S2 230.31
Famotidine EP Impurity F 107880-74-0 RS-F008005 C8H12N4O2S2 260.34

Structures

Frequently asked

How many Famotidine-related reference standards do you hold?
8 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 8 of them and 4 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Famotidine 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 Famotidine 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 Famotidine 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].