Recrystallization-induced tautomerism and selective imine formation of N-diphenylmethylene-serine methyl ester. - Nugraha R; Nakayama F; Aziz DT; Abd Azis SB; Ningsih MW; Fukuda Y; Tachrim ZP; Takehara T; Suzuki T; Murai Y; Hashimoto M (Bioscience, biotechnology, and biochemistry, 2026)