That can't make searching any easier! Sounds like alchemy is popular in anime.
Looks like you're right about Darth being a title:
Darth--Title taken by Sith Lords. Early Sith Lords did not carry this title as it had not been created yet, but then later Lords took the title as they saw fit. From Darth Bane onward, all Sith Lords took the title Darth. This is also the time when the tradition of one master one apprentice began.
You killed it...
Back from the dentist and unable to speak, eat, drink or anything else. On the plus side, it's also numbed my ear.