Triamterene EP Impurity A CAS 1006-23-1

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.1006-23-1
Molecular FormulaC4H6N6O
Molecular Weight154.13 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Triamterene EP Impurity A CAS 1006-23-1 chemical structure

Description

Owing to an amide group, a hydroxyl group, an ether linkage, Triamterene EP Impurity A is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 154.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

CATO supplies Triamterene EP Impurity A (CAS 1006-23-1), a pharmacopoeial impurity reference standard (molecular formula C4H6N6O, MW 154.13 g/mol) used for the identification and quantification of trace impurities in APIs.

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

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 FormulaC4H6N6O
Molecular Weight154.13 g/mol
AppearanceOff-white to pale yellow crystalline powder. (faint amine-like odor)
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Nitrogen Atoms6

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