The structure is very specific,
and although many other drugs may contain sulfur, oxygen, nitrogen, hydrogen
and a benzene ring, they are not "sulfa" drugs unless they are arranged as the "sulfa" chain. The original sulfa drugs were antibiotics. My concern is this doctor seems to be in a rush to either do RAI or surgery. He really didn't want to do the surgery because she is getting married in almost a year to this date. I'm scared to death about the RAI.