1. 1) Ministry of Health, Labour and Welfare. “The Japanese Pharmacopoeia Eighteenth Edition (2021), General Information, Quantitative Analytical Technique Utilizing Nuclear Magnetic Resonance (NMR) Spectroscopy and its Application to Reagents in the Japanese Pharmacopoeia.”:〈https://www.mhlw.go.jp/content/11120000/000904454.pdf〉, cited 23 May, 2023.
2. 2) Ministry of Health, Labour and Welfare. “The Japanese Pharmacopoeia Eighteenth Edition (2021).”:〈https://www.mhlw.go.jp/content/11120000/000943877.pdf〉, cited 23 May, 2023.
3. 3) Ministry of Health, Labour and Welfare. “Supplement I to The Japanese Pharmacopoeia Eighteenth Edition (2022).”:〈https://www.mhlw.go.jp/content/11120000/001022457.pdf〉, cited 23 May, 2023.
4. 4) Ministry of Health, Labour and Welfare. “The Japanese Pharmacopoeia Seventeenth Edition (2016).”:〈https://www.mhlw.go.jp/file/06-Seisakujouhou-11120000-Iyakushokuhinkyoku/JP17_REV_1.pdf〉, cited 23 May, 2023.
5. 5) Fuchino H., Kawahara N., Kiuchi F., Shoyakugaku Zasshi, 64, 7–14 (2010).