Ephedrine is definitely a pain in the ass to get. I bought a lot of it a while back from a source that sells vet grade with no additives and it's great, but he recently stopped selling it so I'm taking a new approach to getting more.
Albuterol is fine, not the same but comparable. Definitely in the ballpark of what you're looking for. It gives you an idea of what clen will do, clen is stronger but honestly I get worse sides from it than DNP.
You can try yohimbine, it's good if you tolerate it well but it can really be overwhelming for some people. I think the correct dosing is .2mg per kg of bodyweight (double check that before you do it, I'm not positive on the math there). It can be taken with caffeine but you'll definitely want to titrate the dose up over time, don't slam 20mg all at once. You also need to be fasted for it to have any effect, it's best for morning cardio. Any insulin response will completely negate the fat mobilization effect.
Most of these fat burners are better taken with L Tyrosine.