Wouldn't it be nice if chemistry worked that way? That you could microscale manufacture all this stuff without access to refining or lots of petroleum or coal?
It's a power fantasy a clef, and it's a gender inverted ripoff of the other famous pharmacist manga, Snow White. It's entertaining though.
On a trivia note, if you're wondering who one of the greatest mangaka in the business in her time was before she started drawing, it was the same profession.
en.wikipedia.org
There's quite a number of ex-physicians and ex-pharmacists in the business, simply because if you think the profession is soul destroying in the US, we've got nothing on Japanese misery. It goes to show that pharmacy is one of the best occupations to start in to make enough money and have enough time on your hands to actually hustle to do something else if only because of the work environment.