3',5'-Dihydroxyacetophenone

pharmaceutical intermediate

4-(N-Methylformamido)benzoic acid

protected amino acid building block

(6R,7R)-7-Amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

cephalosporin antibiotic intermediate

(6R,7R)-7-amino-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

cephalosporin antibiotic active pharmaceutical ingredient

Cefprozil impurity F

pharmaceutical impurity reference standard

(6R,7R)-7-amino-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Pharmaceutical intermediate for cephalosporin antibiotics