The carboxylate group (COOH) is introduced at the 2-position. This can be achieved by using a carboxylation reaction, often employing a carboxylating agent or reagent.
If you need to purchase chemical raw materials, submit your demand information to get the latest quotations.
(6R)-2-ethyl-3-methyl-4-(p-nitrobenzyloxycarbonyl)-2-azacephem
