The present invention provides a spectroscopic method for analyzing isotopes which makes it possible to simplify a system for measurement and to identify isotopes with high accuracy and sensitivity and to carry out quantitative analysis. The techniques describe herein may enable the selection of candidate drugs to be prioritized. The manufacturing method includes the steps of: add 1,8-bisanthraquinone or 1,8-bis-anthraquinone with amino compounds, catalysts, and dehydrated dimethylformamide to form a mixture and react with one another. The combination of the channel body depth and effective channel length are related so that the cell channel body can be fully depleted, and sub-threshold leakage current can be suppressed when the memory cell has a high threshold state under a read bias. The composition is useful as a sealing material, or as an adhesive for electrical components or electronic components.