May 16, 2006
Image of Xanthine 3D Image of Xanthine

Xanthine is a two-oxygen cousin of adenine and guanine, the purine bases of DNA. Uric acid is a three-oxygen cousin, and methlyated relatives include key ingredients in coffee and chocolate: caffeine and, theobromine. Xanthine combined with its isomer oxypurinol forms an anti-cockroach pesticide that doesn’t harm humans.

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