Synonyms: Cystine,N,N'-bis(2,4-dinitrophenyl)- (6CI); Cystine, N,N'-bis(2,4-dinitrophenyl)-, L-(8CI); N,N'-Bis(2,4-dinitrophenyl)cystine (7CI);Di-2,4-dinitrophenyl-L-cystine; Di-DNP-cystine; N,N-Di(DNP)-L-cystine;N,N'-Bis(2,4-dinitrophenyl)-L-cystine; NSC 505719