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PR1MA™  Polymixin B Sulfate

CAS Number: 1405-20-5
Molecular Weight: 1385.61
Chemical Formula: C₅₅H₉₆N₁₆O₁₃ • 2H₂SO₄
Solubility: Water
Storage Temperature: 2-8°C

Mixture of sulfates of polypeptides from certain strains of Bacillus polymixa. Active against gram negative bacteria.


Research or further manufacturing use only, not for food or drug use.

• Appearance: White to Light Yellow Powder
• Identification: Pass Test
• pH (0.5% Solution): 5.0 - 7.5
• Loss on Drying: ≤ 7.0 %
• Single Impurity: ≤ 3.0 %
• Total impurities: ≤ 17.0 %
• Bacteria Colonies: ≤ 10/g
• Ecoli Colonies: Should not be found
• Fungi and Yeast colonies: ≤ 10/g
• Assay, HPLC (on dried basis) (Sum of polymxin B1,B2, B3 and B1-1): ≥ 80.0 %
• Assay, HPLC (on dried basis) (Polymyxin B3): ≤ 6.0 %
• Assay, HPLC (on dried basis) (Polymyxin B1-1): ≤ 15.0 %
• Assay (Dried Basis): ≥ 6000 U/mg
• Assay (Wet Basis): Report U/mg
• Non Animal Origin: Non Animal Origin
• Grade: USP
• Country of Origin: Report