Famotidine Impurity 3 CAS 13598-81-7

Purity 97%+In StockPharmaceutical Standards
CAS No.13598-81-7
Molecular FormulaH5N3O4S2
Molecular Weight175.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Famotidine Impurity 3 CAS 13598-81-7 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Famotidine Impurity 3.

Famotidine Impurity 3 (CAS 13598-81-7), molecular formula H5N3O4S2 and molecular weight 175.19 g/mol, is a CATO reference standard with documented purity and traceability.

Famotidine Impurity 3 (H5N3O4S2) contains a sulfone group. It is notably hygroscopic; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaH5N3O4S2
Molecular Weight175.19 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Freely soluble in water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
CAS Registry Year (est.)1960
Nitrogen Atoms3
Sulfur Atoms2

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Why CATO?