Dapsone hydroxylamine is the hydroxylamine derivative of the antibacterial dapspone (sc-203023), which is most commonly used as part of a multidrug therapy for the treatment of leprosy and as propchylaxis against pneumocystis pneumonia (PCP) in HIV patients. Dapsone hydroxylamine is a toxic metabolite that is responsible for the hemolytic anemia seen in patients following dapsone therapy.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.