Isonicotinamides

Cefsulodin is a third-generation cephalosporin antibiotic that is active against Pseudomonas aeruginosa and was discovered by Takeda Pharmaceutical Company in 1977.

Isonicotinamide (pyridine-4-carboxamide) is the amide form of isonicotinic acid. It is an isomer of nicotinamide, which has the carboxamide group in the 3-position.

Cefalonium (INN) is a first-generation cephalosporin antibiotic.