Chemical structure of the cationic lipids: a
N
1,N
1-dimyristeroyloxyethyl-1,2-diaminoethane; b
N
1,N
1-dimyristeroyloxyethyl-1,3-diaminopropane; c
N
1,N
1-dimyristeroyloxyethyl-3-monoazapentane-1,5-diamine; d
N
1,N
1-dimyristeroyloxyethyl-spermine; e
N
1,N
1-palmitoyloxyethyl-spermine; and f
N
1,N
1-steroyloxyethyl-spermine