167271-60-5 Imidazo[1,2-b]pyridazinium,1-[[(6R,7R)-7-amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]-,inner salt
167257-58-1 2-Methyl-1-propanol reaction products with Et alc., 1-(ethenyloxy)-2-methylpropane and ethoxyethene polymers with 1-(ethenyloxy)-2-methylpropane and ethoxyethene, hydrogenated