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Polymyxin B sulfate CAS 1405-20-5It is a strongly cationic cyclic polypeptide antibiotic that is derived from fermentation of Bacilus polymyxa.
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polyethylene glycol 4000 CAS 25322-68-3It is a low-molecular-weight grade of polyethylene glycol
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Brij-35 CAS 9002-92-0It is a local anaesthetic and antipruritic component of ointments and bath additives.
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Tween 20 CAS 9005-64-5It is a polysorbate-type nonionic surfactant formed by the ethoxylation of sorbitan before the addition of lauric acid.