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HPLC-MS analysis for asperphenamate analog production upon para-substituted phenylalanine supplement on CZ media. BPCs of P. astrolabium extracts of (A) control and growth (B) chloro-, (C) bromo-, (D) amino-, and (E) nitro- phenylalanine supplemented media. EIC in dashed line corresponds for a single amino acid, while dotted indicates a double amino acid incorporation.
