Is oxymorphone available in the US?

Could you please clarify for me if oxymorphone is indeed accessible for purchase and use within the United States? I'm curious about its availability given its status as a controlled substance and the regulations surrounding its distribution. Additionally, I'm interested in understanding if there are any specific requirements or restrictions that individuals need to be aware of when seeking to obtain oxymorphone for medical purposes. Thank you for your assistance in addressing this query.