Biomaterial Database

Determination of diphenoxylate hydrochloride and atropine sulfate in solutions and tablets. 1977

R L Ballbach, and D J Brown, and S M Walters

Methods for the determination of diphenoxylate hydrochloride and atropine sulfate combinations in solutions and powdered tablet composites are presented. A semiautomated assay for diphenoxylate hydrochloride in individual tablets (content uniformity) also is presented. The USP XIX assays for these products are cumbersome and, in the case of solutions, inaccurate due to spectral interferences; the proposed methods offer substantial improvements in sensitivity, specificity, and speed. Results obtained by the USP and proposed methods are compared for several lots of commercial products. The accuracy and precision of the proposed methods are shown by standard recovery studies.

UI	MeSH Term	Description	Entries
D007540	Isonipecotic Acids		Acids, Isonipecotic
D008722	Methods	A series of steps taken in order to conduct research.	Techniques,Methodological Studies,Methodological Study,Procedures,Studies, Methodological,Study, Methodological,Method,Procedure,Technique
D001978	Bromphenol Blue	A dye that has been used as an industrial dye, a laboratory indicator, and a biological stain.	Bromophenol Blue,Tetrabromophenol Blue,Blue, Bromophenol,Blue, Bromphenol,Blue, Tetrabromophenol
D002849	Chromatography, Gas	Fractionation of a vaporized sample as a consequence of partition between a mobile gaseous phase and a stationary phase held in a column. Two types are gas-solid chromatography, where the fixed phase is a solid, and gas-liquid, in which the stationary phase is a nonvolatile liquid supported on an inert solid matrix.	Chromatography, Gas-Liquid,Gas Chromatography,Chromatographies, Gas,Chromatographies, Gas-Liquid,Chromatography, Gas Liquid,Gas Chromatographies,Gas-Liquid Chromatographies,Gas-Liquid Chromatography
D004157	Diphenoxylate	A MEPERIDINE congener used as an antidiarrheal, usually in combination with ATROPINE. At high doses, it acts like morphine. Its unesterified metabolite difenoxin has similar properties and is used similarly. It has little or no analgesic activity.	Diphenoxylate Hydrochloride,Diphenoxylate Monohydrochloride,Hydrochloride, Diphenoxylate,Monohydrochloride, Diphenoxylate
D001285	Atropine	An alkaloid, originally from Atropa belladonna, but found in other plants, mainly SOLANACEAE. Hyoscyamine is the 3(S)-endo isomer of atropine.	AtroPen,Atropin Augenöl,Atropine Sulfate,Atropine Sulfate Anhydrous,Atropinol,Anhydrous, Atropine Sulfate,Augenöl, Atropin,Sulfate Anhydrous, Atropine,Sulfate, Atropine
D001322	Autoanalysis	Method of analyzing chemicals using automation.	Autoanalyses
D012996	Solutions	The homogeneous mixtures formed by the mixing of a solid, liquid, or gaseous substance (solute) with a liquid (the solvent), from which the dissolved substances can be recovered by physical processes. (From Grant & Hackh's Chemical Dictionary, 5th ed)	Solution
D013053	Spectrophotometry	The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.
D013056	Spectrophotometry, Ultraviolet	Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Ultraviolet Spectrophotometry