发明授权
US09504747B2 Lipids and lipid compositions for the delivery of active agents 有权
用于递送活性剂的脂质和脂质组合物

Lipids and lipid compositions for the delivery of active agents
摘要:
This invention provides for a compound of formula (I): or a pharmaceutically acceptable salt thereof, wherein R1-R4, L and X are defined herein. The compounds of formula (I) and pharmaceutically acceptable salts thereof are cationic lipids useful in the delivery of biologically active agents to cells and tissues.
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