The invention provides certain N-acyloxysulfonamide and N-hydroxy-N-acylsulfonamide derivative compounds, pharmaceutical compositions and kits comprising such compounds, and methods of using such compounds or pharmaceutical compositions. In particular, the invention provides methods of using such compounds or pharmaceutical compositions for treating, preventing, or delaying the onset and/or develop of a disease or condition. In some embodiments, the disease or condition is selected, from cardiovascular diseases, ischemia, reperfusion injury, cancerous disease, pulmonary hypertension and conditions responsive to nitroxyl therapy.