Technetium-99m-labeled genistein as a potential radical scavenging agent

Danni Ramdhani; Maula Eka Sriyani; Flamboyan Ayu

doi:10.4103/japtr.JAPTR_27_19

Technetium-99m-labeled genistein as a potential radical scavenging agent

J Adv Pharm Technol Res. 2019 Jul-Sep;10(3):112-116. doi: 10.4103/japtr.JAPTR_27_19.

Authors

Danni Ramdhani¹, Maula Eka Sriyani², Flamboyan Ayu¹

Affiliations

¹ Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Padjadjaran University, Sumedang, West Java, Indonesia.
² Applied Nuclear Science and Technology Center (PSTNT), National Atomic Energy Agency (BATAN), Bandung, West Java, Indonesia.

Abstract

The purpose of this study was to determine the optimum conditions for labeling genistein compounds with technetium-99m (^99mTc) radionuclides and the percentage of purity obtained in accordance with the requirements of the United State Pharmacopeia. The method used is optimization of several parameters including pH, SnCl₂.2H₂O as reducing agents, genistein concentration, and incubation time. The results showed that the optimum conditions for labeling ^99mTc-Genistein were obtained under conditions of pH 8, the amount of SnCl₂.2H₂O reducing agents was 30 μg, 0.5 mg genistein, and in 10 min. The optimization of this condition resulted in radiochemical purity in the labeling of ^99mTc-Genistein compounds at 95.43% ± 0.85%. The radiochemical purity of the labeling of ^99mTc-Genistein compounds has met the requirements of the United State Pharmacopeia as a compound marked for diagnosis of more than 90%.

Keywords: Free radicals; genistein; radiochemical purity; radiopharmaceutical; technetium-99m; technetium-99m-genistein.