Buy high quality Cefalexin EP Impurity B with CAS No - 22252-43-3 from Chemicea Pharma. Chemicea Pharma is one of the leading manufacturer and exporter of Cefalexin EP Impurity B
Chemical Name:(6R,7R)-7-Amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (as per EP)
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