Ampicillin-d5 Amino-benzeneacetaldehyde is deuterium labeled Ampicillin Amino-benzeneacetaldehyde (A634375), whichÂcan be used to develop HPLC methods that detectÂcompounds or impurities related to ampicillin in bulk drug.ÂAmpicillin Amino-benzeneacetaldehydeÂis a related compound ofÂAmpicillin (A634300), aÂβ-lactamÂantibiotic used for treating bacterial infection.ÂAmpicillin interferes with cell wall synthesis in bacteria.