The enantioselectivity of N-dodecanoyl-L-proline-3,5-dimethyl-anilide is also good, but the basic line fluctuates strongly due to containing benzene ring in its molecular structure.
The structure of the MIGmust be carefully selected, as the tiny change on it will affect beam performance highly, and beam current will fluctuate punily.
An analysis is made of the present status of production of DAP by the mixed process of preneutralization reactor tank-pipe reactor,as the moisture content of the product fluctuates greatly.