The result was acetylsalicylic acid, the modern active ingredient in aspirin.

结果是杨酸，阿司的现代活性成分。

So, the active ingredient in aspirin is a compound called acetylsalicylic acid.

阿司的活性成分是一种叫做杨酸的化合物。

Soon, aspirin became synonymous with acetylsalicylic acid.

很快，阿司成了杨酸的代名词。

In 1853, a French chemist managed to chemically synthesize the compound, creating a substance called acetylsalicylic acid.

1853 年， 一位法国化学家成功地化学合成了这种化合物，产生了一种叫做杨酸的物质。

Now if you swap the methyls out for a couple of other slightly more complicated groups, then you get acetylsalicylic acid, or aspirin.

现在， 如果将甲基换成其他几个稍微复杂一些的基团，会得到杨酸或阿司。

And thus, we can build the compounds we need, whether it be the simple stuff, like acetylsalicylic acid, aspirin, or something more complicated, like alpha-(5,6-dimethylbenzimidazolyl)cobamidcyanide, better known as vitamin B12.

因此，我们可以构建我们需要的化合物， 无论是简单的东西， 如杨酸、阿司，还是更复杂的东西， 如 α-(5, 6-二甲基苯并咪唑基)cobamidcyanide， 也是众所周知的维生素 B12。