DIFF Main Group
C09B 26/00 Hydrazone dyes; Triazene dyes
Introduced: January 1980
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1980.
Child Classifications
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- C09B 26/02 Hydrazone dyes (hydrazone-azo dyes C09B56/18) since 1980 IPC+CPC Available in IPC and CPC