Cause of and countermeasures for oxidation of the cysteine-derived reagent used in the amino acid derivative reactivity assay

Masaharu Fujita, Yusuke Yamamoto, Shinichi Watanabe, Tsunetsugu Sugawara, Koji Wakabayashi, Yu Tahara, Nobuyuki Horie, Keiichi Fujimoto, Kei Kusakari, Yoshihiko Kurokawa, Tsuyoshi Kawakami, Kohichi Kojima, Hajime Kojima, Atsushi Ono, Yasuhiro Katsuoka, Hideto Tanabe, Hiroshi Yokoyama, Toshihiko Kasahara