(6R,7R)-7-Amino-3-(imidazo[1,2-b]pyridazin-1(5H)-ylmethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene
2-Propyl-1H-pyrrolo[2,3-c]pyridine
1-Cyclopropyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid
5-Trityl-5,6,7,7a-tetrahydrothieno[3,2-c]pyridin-2(4H)-one