为NMR库中1H和13C以及其它核加标记

Add Assignments to NMR Databases for 1 H, 13 C, & Other Nuclei

The AssignIt ® application allows KnowItAll users to increase the power of the databases they build using the MineIt TM Database
Building option. With the AssignIt application, users can add assignments and other information to the structures in 1 H, 13 C, 19 F, 31 P, 15 N, 17 O, 11 B, & 22 Si NMR databases. AssignIt’s easy-to-use interface allows quick database information input, such as peak shift assignments, intensities, coupling constants, and multiplicities—all linked to the relevant chemical structure or proposed structure.