Active ingredientFamotidineCat. No. P-F003-001CAS 76824-35-6
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Pharmacopoeial impurity · Famotidine family
Pharmaceutical analytical standardFamotidine EP Impurity B
Synonyms: Famotidine dimer, Famotidine Impurity B, Guanidine, N,N'''-((1,1-dioxido-2H-1,2,4,6-thiatriazine-3,5-diyl)bis(2,1-ethanediylthiomethylene-4,2-thiazolediyl))bis-, Famotidine impurity b (ep impurity), Famotidine specified impurity B, Famotidine rela ted compound B, Famotidine USP Related Compound B, FaMotidine EP IMpurity B (USP RC B)
- Cat. No.
- P-F003-004
- CAS
- 89268-62-2
- Alternative CAS
- 109467-08-5 (maleate)
- Formula
- C16H23N11O2S5
- Molecular weight
- 561.74 g/mol
- Category
- Pharmacopoeial impurity (EP/USP)
Family: Famotidine
A histamine H2 receptor antagonist developed in Japan, patented in 1979 and in use since the mid-1980s: it reduces acid production in the stomach and is used for ulcers and reflux.
Did you know?It is not only a human medicine: vets also use it to treat acid reflux in dogs and cats.
The two levels compared
| Level 1 Mass balance | Level 2 Mass balance + qNMR | |
|---|---|---|
| Identity (IR, MS, 1H and 13C-NMR; peptides: ESI-MS, MALDI-TOF and IR) | ✓ | ✓ |
| HPLC purity (min. 95%) | ✓ | ✓ |
| Content by mass balance (min. 90%; peptides: for information only)* | ✓ | ✓ |
| Content verified by qNMR (small molecules only) | · | ✓ |
| Suitable to qualify it as an in-house primary standard (ICH Q7) | · | ✓ |
* Mass balance is performed on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it, for example oils and highly volatile substances, on which some of the required measurements cannot be made: in those cases the CoA states how the content was assigned.
What you receive
The analytical standard
Shipped under controlled temperature when the molecule requires it.
Certificate of analysis (CoA)
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Safety data sheet (SDS)
Sent with every order.
Tracked shipment
Follow your shipment live, from our warehouse to your lab.
More products in the Famotidine family
Active ingredientFamotidineCat. No. P-F003-001CAS 76824-35-6
Pharmacopoeial impurityFamotidine EP Impurity A HydrochlorideCat. No. P-F003-002CAS 76833-47-1
Pharmacopoeial impurityFamotidine EP Impurity A DiHClCat. No. P-F003-003CAS 88061-72-7
Pharmacopoeial impurityFamotidine EP Impurity B DimaleateCat. No. P-F003-005CAS 109467-08-5
Pharmacopoeial impurityFamotidine EP Impurity C HydrochlorideCat. No. P-F003-006CAS 76824-17-4
Pharmacopoeial impurityFamotidine EP Impurity DCat. No. P-F003-007CAS 76824-16-3
Pharmacopoeial impurityFamotidine EP Impurity ECat. No. P-F003-008CAS 129083-44-9
Pharmacopoeial impurityFamotidine EP Impurity FCat. No. P-F003-009CAS 107880-74-0Frequently asked questions
Is mass balance always performed?
Yes, on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it: for example oils and highly volatile substances, on which some measurements (such as thermogravimetry) cannot be made. In those cases the CoA states which method was used to assign the content.
Can I ask for a different quantity?
Yes. The quantities are only suggestions: choose "Other" and enter the milligrams or grams you need.
Which level should I choose?
Level 1 is enough for most routine testing. Level 2 adds an independent qNMR content value and is meant for labs that need to qualify an in-house primary standard. For peptides and similar molecules, Level 2 is not available.
When will I get the quote?
Within 24 working hours, with price, availability and delivery time.
Need a molecule you cannot find?
Custom synthesis of impurities, metabolites and labelled compounds, with the same characterisation level.