It took nearly another 70 years for a German pharmacist, Johann Buchner, to finally identify and purify the substance that made all this possible, a compound called salicin.
科学快报-科学美国人2023Science Quickly, from SCIENTIFIC AMERICAN 2023
And you know we're really lucky that I see today… We can have an aspirin tablet; we don't have to chew on willow bark to get that salicin that's going to give us that pain relief that we need.