ABD-F is a useful reagent for the sensitive and specific detection of thiols both by TLC and HPLC. When combined with a reducing agent such as tributylphosphine, it can also be used for the determination of disulfides in peptides and proteins. &lamba;Ex/&lamba; Em(N-acetylcysteine conjugate at pH 2) = 375/508 nm Of-white solid soluble in DMSO or DMF Store desiccated at 4°C and protect from light especially in solution C7H7FN3O3S MW: 232