Now, from a chemical perspective, caffeine can be described as both a methylxanthine and an alkaloid.

从化学角，咖啡因既可以被描述为甲基黄嘌呤，也可以被描述为生物碱。

There are also medications that help to decrease uric acid levels, which include xanthine oxidase inhibitors like allopurinol.

也有些药物可以帮助降尿含量，包括黄嘌呤氧化酶抑制剂，如别嘌醇。

Finally, there are some rare stones made of xanthine, which, just like uric acid, is a byproduct of purine breakdown.

最后，还有由黄嘌呤形成的罕见结石，同尿，是嘌呤分解的副产物。

Xanthine oxidase is an enzyme involved in the breakdown of purines to uric acid, so inhibiting this enzyme results in less uric acid production.

黄嘌呤氧化酶负责分解嘌呤为尿，所以抑制这个酶，就可以减少尿的生成。

Caffeine, known to chemists as 1,3,7-trimethylxanthine, is actually similar in structure to naturally-occurring molecules in our in our body called adenosines.

咖啡因，化学家称为 1,3,7-三甲基黄嘌呤，实际上在结构上与我们体内天然存在的腺苷分子相似。