DIFF Subgroup
C07C 231/22 Separation; Purification; Stabilisation; Use of additives (separation of optical isomers C07C231/20)
Introduced: January 1990
Title
Titles differ between systems:
IPC: Separation; Purification; Stabilisation; Use of additives
CPC: Separation; Purification; Stabilisation; Use of additives (separation of optical isomers C07C231/20)
Full Title
Full titles differ between systems:
IPC:
Preparation of carboxylic acid amides > Separation; Purification; Stabilisation; Use of additives
CPC:
Preparation of carboxylic acid amides > Separation; Purification; Stabilisation; Use of additives (separation of optical isomers C07C231/20)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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