CPC Subgroup
A23K 20/116 Heterocyclic compounds
Full Title
Accessory food factors for animal feeding-stuffs > Organic substances > Heterocyclic compounds
3 direct subcodes
Child Classifications
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- A23K 20/121 containing oxygen or sulfur as hetero atom
- A23K 20/132 containing only one nitrogen as hetero atom
- A23K 20/137 containing two hetero atoms, of which at least one is nitrogen