with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3

Full Title

Heterocyclic compounds containing purine ring systems > with oxygen, sulfur, or nitrogen atoms directly attached in positions 2 and 6 > two oxygen atoms > with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3

Classification Context

Section:

CHEMISTRY; METALLURGY

Class:

ORGANIC CHEMISTRY

Subclass:

HETEROCYCLIC COMPOUNDS

Child Classifications

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• C07D 473/08 with methyl radicals in positions 1 and 3, e.g. theophylline
• C07D 473/1 with methyl radicals in positions 3 and 7, e.g. theobromine
• C07D 473/12 with methyl radicals in positions 1, 3, and 7, e.g. caffeine
• C07D 473/14 with two methyl radicals in positions 1 and 3 and two methyl radicals in positions 7, 8, or 9