Why did the medieval universities reject alchemy?

Medieval universities largely rejected alchemy because it was perceived as a mystical and unscientific practice lacking empirical evidence and rigorous methodology. Alchemy's focus on transmuting base metals into gold and seeking the philosopher's stone was often viewed as superstition rather than a legitimate scholarly pursuit. Additionally, the rise of natural philosophy and the emphasis on Aristotelian logic encouraged a more systematic and rational approach to understanding the natural world, further sidelining alchemical practices. This rejection paved the way for the development of modern chemistry.