Need to buy penicilin impurities

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Viccroc
Viccroc's picture
Need to buy penicilin impurities

We`ve sourced it but its pricy
Could someone help us to locate another affordable supplier
Need it for method validation
Thanks

Dr. Analytical
Dr. Analytical's picture
What sources have you tried? 

What sources have you tried?  Sigma-Aldrich is usually my first choice.  ChemService has some penicillin-related materials.  What compounds are you looking for and what suppliers have you considered?