Methylxanthines are chemical compounds which are derivatives of xanthine with one or more methyl groups, including:

One methyl group:

• 1-Methylxanthine
• 3-Methylxanthine
• 7-Methylxanthine

Two methyl groups:

• Theophylline (1,3-dimethylxanthine)
• Paraxanthine (1,7-dimethylxanthine)
• Theobromine (3,7-dimethylxanthine)

Three methyl groups:

• Caffeine (1,3,7-trimethylxanthine)

General references

• Fredholm, Bertil B. (22 September 2010). Methylxanthines. Springer Science & Business Media. ISBN   978-3-642-13443-2 . Retrieved 16 February 2025.

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