Appearance: White powder Clarity and Color: Passes Test Heavy Metals: Passes Test pH: 7.4 (BP), 8.0 (USP) Optical Rotation: [a] = -49 Loss on Drying: 0.80% Sulfated Ash: 21% Assay: 12,892 U/mg, 408 ug/mg Pyrogen: Passes Test: Total sulphite: As reported Identification: As reported Free colistin: As reported Sterility: As reported Undue Toxicity: As reported Storage and Stability: Lyophilized powder may be stored at -20C. Stable for 12 months after receipt at 4C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at 4C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Molecular Weight:
1759.9
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