{Reference Type}: Letter {Title}: Omadacycline powder for research procured from unauthorized commercial vendors may be impure and/or unstable. {Author}: Serio AW;Deck DH;Wright K;Manion K; {Journal}: Antimicrob Agents Chemother {Volume}: 0 {Issue}: 0 {Year}: 2024 Jun 18 {Factor}: 5.938 {DOI}: 10.1128/aac.00638-24