3D-KAA09840 - 4-acetamido-3-hydroxybenzoic-acid

4-Acetamido-2-hydroxybenzoic acid

Impurity Metoclopramide EP Impurity H
Applications N-Acetyl-4-aminosalicylic Acid (Metoclopramide EP Impurity H) is hydroxybenzoic acid that is a versatile reactant used in the preparation of salicylanilide derivatives as inhibitors of the protein tyrosine kinase epidermal growth factor receptor.
References Liechti, C., et al.: Eur. J. Med. Chem., 39, 11 (2004);

N-Acetyl-4-aminosalicylic acid is an active site directed probe for the detection of salicylic acid. It has a fluorescence emission maximum at 370 nm and a fluorescence quantum yield of 0.93. N-Acetyl-4-aminosalicylic acid can be used to analyze samples, such as wastewater and human urine, which contain salicylic acid. The probe is protonated in the presence of salicylic acid and then binds to the acceptor in the sample with a bimodal distribution. The fluorescence resonance energy transfer (FRET) process between the donor and acceptor leads to an increase in fluorescence intensity that can be detected by electrophoresis methods. This probe also has a conformational change when it binds to its target, which allows for easy separation from other components in the sample by size exclusion chromatography.