Pharmaceutical grade phthalazinediones, process for their preparation and pharmaceutical compositions containing them

摘要

The present invention comprises methods of manufacturing a highly purified, pharmaceutical grade phthalazinedione for administration to a human or animal. The manufacturing methods identify and isolate starting materials, and prepare intermediate products, which are suitable for the commercial batch process production of highly purified and high-yielding intermediate products and final phthalazinedione products.