Colorimetric Determination of Pyruvic Acid with p-Dimethylaminobenzaldehyde

Spectrophotometric Determination of Hydralazine Using p-Dimethylaminobenzaldehyde

A new spectrophotometric method for the assay of hydralazine hydrochloride in bulk and dosage forms has been developed. The procedure is based on a condensation reaction between alcoholic solution of hydralazine and acidic solution of pdimethylaminobenzaldehyde to generate an instant greenish-yellow coloured product. The hydrazone formed absorbed visible light strongly and optimal detector resp...

Spectrophotometric determination of Cilastazol using p-dimethylaminobenzaldehyde

A simple accurate and reproducible spectrophotometric method was established for the estimation of Cilastazol based on the formation of condensation product. The method is based on the formation of yellow colored chromogen, when the drug reacts with p-Dimethylaminobenzaldehyde (PDAB). The colored species has an absorption maximum at 425 nm and obeys Beer's law in the concentration range of 6-10...

Pyruvic Acid I. Collection of Blood for the Determination of Pyruvic and Lactic Acids*

The accurate determination of pyruvic and lactic acids is a matter of considerable theoretical and practical importance. These acids play a role in the metabolism of carbohydrates, and they are found in increased concentration in the blood in conditions of thiamine deficiency. Recently we suggested (1) the determination of the ratio of lactic to pyruvic acid in the blood as a measure of oxidati...

Phenylbiguanide-p-Sulfonic Acid as an Analytical Reagent for the Colorimetric Determination of Nickel

The Determination of Pyruvic Acid in Blood in the Presence of Acetoacetic Acid