Famotidine disulfide

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MedKoo CAT#: 575309

CAS#: 129083-44-9

Description: Famotidine disulfide is a histamine H2-receptor antagonist that inhibits stomach acid production. It is commonly used in the treatment of peptic ulcer disease and gastroesophageal reflux disease.

Chemical Structure

Famotidine disulfide
CAS# 129083-44-9

Theoretical Analysis

MedKoo Cat#: 575309
Name: Famotidine disulfide
CAS#: 129083-44-9
Chemical Formula: C10H14N8S4
Exact Mass: 374.0224
Molecular Weight: 374.52
Elemental Analysis: C, 32.07; H, 3.77; N, 29.92; S, 34.24

Price and Availability

Size Price Availability Quantity
1.0mg USD 295.0 2 Weeks
25.0mg USD 525.0 2 Weeks
250.0mg USD 1370.0 2 Weeks
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Synonym: Famotidine disulfide; Famotidine impurity E; Famotidine related compound E

IUPAC/Chemical Name: Guanidine, N,N'''-(dithiobis(methylene-4,2-thiazolediyl))bis-


InChi Code: InChI=1S/C10H14N8S4/c11-7(12)17-9-15-5(1-19-9)3-21-22-4-6-2-20-10(16-6)18-8(13)14/h1-2H,3-4H2,(H4,11,12,15,17)(H4,13,14,16,18)

SMILES Code: NC(=Nc1nc(CSSCc2csc(N=C(N)N)n2)cs1)N

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 374.52 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Lin SY. An overview of famotidine polymorphs: solid-state characteristics, thermodynamics, polymorphic transformation and quality control. Pharm Res. 2014 Jul;31(7):1619-31. doi: 10.1007/s11095-014-1323-5. Epub 2014 Mar 1. Review. PubMed PMID: 24577998.

2: Deeks ED. Fixed-dose ibuprofen/famotidine: a review of its use to reduce the risk of gastric and duodenal ulcers in patients requiring NSAID therapy. Clin Drug Investig. 2013 Sep;33(9):689-97. doi: 10.1007/s40261-013-0113-x. Review. PubMed PMID: 23881568.

3: Schiff M, Peura D. HZT-501 (DUEXIS(®); ibuprofen 800 mg/famotidine 26.6 mg) gastrointestinal protection in the treatment of the signs and symptoms of rheumatoid arthritis and osteoarthritis. Expert Rev Gastroenterol Hepatol. 2012 Feb;6(1):25-35. doi: 10.1586/egh.11.88. Review. PubMed PMID: 22149579.

4: Tyre CC, Quan W. Nursing care of patients receiving high-dose, continuous-infusion interleukin-2 with pulse dose and famotidine. Clin J Oncol Nurs. 2007 Aug;11(4):513-9. Review. PubMed PMID: 17723964.

5: Martinez MC. Famotidine in the management of schizophrenia. Ann Pharmacother. 1999 Jun;33(6):742-7. Review. PubMed PMID: 10410190.