Nitrofurantoin

Formula : C8-H6-N4-O5
CAS : 67-20-9 

A urinary anti-infective agent effective against most gram-positive and gram-negative organisms. Although sulfonamides and antibiotics are usually the agents of choice for urinary tract infections, nitrofurantoin is widely used for prophylaxis and long-term suppression.

Nitrofurantoin sodium

Formula : C8-H6-N4-O5.Na
CAS : 54-87-5 

A urinary anti-infective agent effective against most gram-positive and gram-negative organisms. Although sulfonamides and antibiotics are usually the agents of choice for urinary tract infections, nitrofurantoin is widely used for prophylaxis and long-term suppression.