How is (6R,7R)-7-{[(2Z)-2-(5-Amino-1,2,4-thiadiazol-3-yl)-2-(methoxyimino)acetyl]amino}-3-(imidazo[1,2-b]pyridazin-1-ium-1-ylmethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate (CAS: 113359-04-9) typically synthesized?

This compound is typically synthesized via a multi-step process involving the reaction of a thiosemicarbazide derivative with an acylating agent under basic conditions. The synthesis involves the formation of an intermediate thiosemicarbazone, which is then reacted with an imidazo[1,2-b]pyridazine derivative to form the final product. The process requires careful control of pH and temperature to achieve high yields and selectivity.