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Table 1 Relevant IPC codes

From: Mining chemical information from open patents

IPC Code Description
C07B General methods of organic chemistry; apparatus therefor
C07C Acyclic or carbocyclic compounds
C07D Heterocyclic compounds
C07F Acyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium