Phosphonoacetamide

Formula : C2-H6-N-O4-P
CAS : 22363-89-9 

Inhibitors of carbamoyl phosphate and aspartate.

Phosphonoacetic acid

Formula : C2-H5-O5-P
CAS : 4408-78-0 

A simple organophosphorus compound that inhibits DNA polymerase, especially in viruses and is used as an antiviral agent.