Polymyxin B nonapeptide (TFA)

Polymyxin B nonapeptide (TFA)

• CAS Number: 2220175-42-6
• UNSPSC Description: Polymyxin B nonapeptide TFA is a cyclic peptide obtained from Polymyxin B by proteolytic removal of its terminal amino acyl residue. Polymyxin B nonapeptide TFA is less toxic, lacks bactericidal activity, and retains its ability to render gram-negative bacteria susceptible to several antibiotics by permeabilizing their outer membranes[1][2][3].
• Target Antigen: Antibiotic; Bacterial
• Type: Peptides
• Related Pathways: Anti-infection
• Applications: COVID-19-immunoregulation
• Field of Research: Infection
• Assay Protocol: https://www.medchemexpress.com/polymyxin-b-nonapeptide-tfa.html
• Purity: 99.82
• Solubility: DMSO : 100 mg/mL (ultrasonic)|H2O : 50 mg/mL (ultrasonic;warming;heat to 60°C)
• Smiles: FC(F)(F)C(O)=O.FC(F)(F)C(O)=O.FC(F)(F)C(O)=O.FC(F)(F)C(O)=O.O=C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@@]1([H])[C@H](O)C)=O)CCN)=O)CCN)=O)CC(C)C)[C@H](NC([C@@H](NC([C@H](CCNC1=O)NC([C@H](CCN)NC([C@@H](N)[C@H](O)C)=O)=O)=O)CCN)=O)CC2=CC=CC=C2.FC(F)(F)C(O)=O
• Molecular Weight: 1533.25
• References & Citations: [1]Al-Marzooq F, et al. Discerning the role of polymyxin B nonapeptide in restoring the antibacterial activity of azithromycin against antibiotic-resistant Escherichia coli. Front Microbiol. 2022 Sep 21;13:998671.|[2]Danner RL,et al. Purification, toxicity, and antiendotoxin activity of polymyxin B nonapeptide. Antimicrob Agents Chemother. 1989 Sep;33(9):1428-34.|[3]Ofek I, et al. Antibacterial synergism of polymyxin B nonapeptide and hydrophobic antibiotics in experimental gram-negative infections in mice. Antimicrob Agents Chemother. 1994 Feb;38(2):374-7.
• Shipping Conditions: Blue Ice
• Storage Conditions: -80°C, 2 years; -20°C, 1 year (Powder, sealed storage, away from moisture)
• Clinical Information: No Development Reported