N-(2-NITROPHENYLSULFENYL)-L-TYROSINE (DICYCLOHEXYLAMMONIUM) SALT;N-O-nitrophenylsulfenyl-L-tyrosine dcha;N-o-NPS-L-Tyrosine, dicyclohexylammonium salt N-o-Nitrophenylsulfenyl-L-tyrosine, dicyclohexylammonium salt;N-(2-NITROPHENYLSULFENYL)-L-TRYPTOPHAN (DICYCLOHEXYLAMMONIUM);N-(2-Nitrophenylsulfenyl)-L-tyrosine (dicyclohexylaMMoniuM) salt crystalline;N-o-Nitrophenylsulfenyl-L-tyrosine di(cyclohexyl)ammonium salt