# Utility of fluorescamine for spectrofluorimetric quantitation of berotralstat hydrochloride in spiked human plasma and content uniformity test and evaluation of method greenness

## TL;DR

This paper introduces a new, sensitive method using fluorescamine to measure berotralstat in human plasma and test drug capsule uniformity, with a focus on green chemistry.

## Contribution

The first validated spectrofluorimetric method for berotralstat using fluorescamine and a green analytical process.

## Key findings

- The method showed linearity from 100 to 1000 ng mL−1 with LOD of 6.98 ng mL−1 and LOQ of 26.36 ng mL−1.
- The method was successfully applied to spiked human plasma and pharmaceutical capsules.
- The analytical process was confirmed to be environmentally friendly based on green chemistry metrics.

## Abstract

A novel, simple and highly sensitive spectrofluorimetric approach has been developed and validated for the first time for determination of berotralstat through derivatization reaction using fluorescamine as a fluorescent probe. The reaction was carried out in buffered medium at pH 7.5, using a borate buffer. After being illuminated at 390 nm, the fluorescence intensity of the resulting product was measured at 480 nm. The proposed approach demonstrated linearity within the concentration range of 100 to 1000 ng mL− 1. LOD and LOQ are 6.98 and 26.36 ng mL− 1, respectively. Pharmaceutical capsules of berotralstat were successfully evaluated in addition to spiked biological fluid. The statistical data has been validated in accordance with ICH criteria. Additionally, it was applied to examine the content uniformity in accordance with US Pharmacopeia requirements. Furthermore, the results of the ecology scale scores indicated that the analytical process involved was green.