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Table 1 Composition of Definity® [2]

From: Perflutren lipid microspheres for echocardiogram contrast: a clinical case of anaphylaxis not caused by PEG

Core gas

Shell composition

Excipients

Octafluoropropane

• 1,2-dipalmitoyl-sn-glycero-3-phosphatidic acid, monosodium salt (DPPA)

• 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC)

• N-(methoxypolyethylene glycol 5000 carbamoyl)-1,2-dipalmitoyl-sn-glycero-3-phosphatidylethanolamine, monosodium salt (MPEG5000 DPPE)

• Propylene glycol

• Glycerin

• Sodium phosphate monobasic monohydrate

• Sodium phosphate dibasic heptahydrate

• Sodium chloride

• Water