Crystalline salts of dodecyl 2-(n,n-dimethylamino)-propionate

Details Crystalline salts of dodecyl 2-(n,n-dimethylamino)-propionate Crystalline salts of dodecyl 2-(n,n-dimethylamino)-propionate

C - Chemistry, Metallurgy

07

C

C07C 227/18 (2006.01) C07C 229/12 (2006.01)

Patent

CA 2706680

Dodecyl 2-(N,N-dimethylamino)-propionate (DDAIP), having the following chemical structure: (see above formula) is prepared by transesterification of ethyl 2-(N,N- dimethylamino)-propionate. Crystalline acid addition salts of DDAIP are prepared by cooled mixing DDAIP with one of a select group of acids in the presence of a water-immiscible solvent such as hexane. The resulting DDAIP salts are crystalline, and exhibit a pattern of defined detection peaks upon analysis by powder x-ray diffraction. DDAIP is useful as a skin penetration enhancer.

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