in strongly alkaline media forms highly fluorescent products with guanidine and monosubstituted or N,N-disubstituted guanidines. The most highly fluorescent product is formed with creatine ...

School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China ...

Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan ...