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Pharmacopeial Impurities (EP / USP / BP)

Famotidine EP Impurity B

Reference StandardAvailable on request

Buy Famotidine EP Impurity B (CAS 89268-62-2) from Zemixal. Request a quote with price, lead time and documents. Ships from India to 120+ countries.

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Famotidine EP Impurity B chemical structure
CAS number89268-62-2
FormulaC16H23N11O2S5
Molar mass561.8 g/mol
Physical formSolid
HS code38229090
InChIKeyNRRXZFHNRLQONH-UHFFFAOYSA-N
IUPAC name2-[4-[2-[5-[2-[[2-(diaminomethylideneamino)-1,3-thiazol-4-yl]methylsulfanyl]ethyl]-1,1-dioxo-4H-1,2,4,6-thiatriazin-3-yl]ethylsulfanylmethyl]-1,3-thiazol-2-yl]guanidine

About Famotidine EP Impurity B

Analytical teams working on Famotidine use Famotidine EP Impurity B as a qualified comparison standard. Key data (Reference Standard): CAS 89268-62-2, formula C16H23N11O2S5 and molar mass 561.8 g/mol. It is handled as a solid.

Where it is used

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Storage and safety notes

It carries the GHS signal word Warning (H302, H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. You receive a certificate of analysis with characterisation data with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Famotidine

See every impurity, metabolite and related compound we list for this API.

Famotidine standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Famotidine EP Impurity B
Product nameFamotidine EP Impurity B
Catalogue numberZX-005700
CAS number89268-62-2
Other CAS numbers109467-08-5
IUPAC name2-[4-[2-[5-[2-[[2-(diaminomethylideneamino)-1,3-thiazol-4-yl]methylsulfanyl]ethyl]-1,1-dioxo-4H-1,2,4,6-thiatriazin-3-yl]ethylsulfanylmethyl]-1,3-thiazol-2-yl]guanidine
Molecular formulaC16H23N11O2S5
Molar mass561.8 g/mol
Exact mass561.064
GradeReference Standard
Physical formSolid
XLogP3-1.1
H-bond donors / acceptors5 / 12
Topological polar surface area341 Ų
HS code38229090
InChIKeyNRRXZFHNRLQONH-UHFFFAOYSA-N
SMILESC1=C(N=C(S1)N=C(N)N)CSCCC2=NS(=O)(=O)N=C(N2)CCSCC3=CSC(=N3)N=C(N)N
PubChem CID13359055
SynonymsFamotidine dimer, Famotidine Related Compound B (USP), Famotidine Impurity B, Famotidine specified impurity B, Famotidine Related Compound B, Famotidine rela ted compound B, Famotidine USP Related Compound B, FaMotidine EP IMpurity B (USP RC B), bis(2,1-ethanediylthioMethylene-4,2-thiazolediyl)]bisguanidi, N,N'''-[(1,1-Dioxido-2H-1,2,4,6-thiatriazine-3,5-diyl)

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H302Harmful if swallowed
  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Famotidine EP Impurity B
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Famotidine EP Impurity B

Which CAS number identifies Famotidine EP Impurity B?
Famotidine EP Impurity B is registered under CAS 89268-62-2. You may also see it listed as Famotidine dimer, Famotidine Related Compound B (USP), Famotidine Impurity B. Our catalogue number for this item is ZX-005700.
What are the formula and molar mass of Famotidine EP Impurity B?
For Famotidine EP Impurity B, its formula is C16H23N11O2S5 and its molar mass is 561.8 g/mol. InChIKey NRRXZFHNRLQONH-UHFFFAOYSA-N lets you match it in any structure database.
How is Famotidine EP Impurity B used in pharmaceutical QC?
Famotidine EP Impurity B is a characterised reference material linked to Famotidine. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Famotidine EP Impurity B?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Famotidine EP Impurity B?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Famotidine EP Impurity B to my country?
Yes. Because Famotidine EP Impurity B is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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