Medical-grade gasoline

Anyone know where an individual could pick up some medical-grade fuel here in Washington, D.C.?
Like, I need to buy it in person—definitely not looking to order anything online...
So far, every pharmacy I've checked out is totally out of stock.
Someone suggested checking at a Sherwin-Williams or something similar, but I'm worried their stuff won't be pure enough—maybe I'm wrong though, haven't had a chance to ask yet!
Ideally, I just need a liter, but if they only have small bottles, I guess I'll just pay the extra bucks...

Thanks!

I picked one up last year at the first pharmacy I walked into back in Savannah.
So—it’s pretty strange that you can't find it in Washington, D.C.
Maybe they don't stock it because it's not in high demand, and it tends to evaporate—it's quite volatile. Mine came in the original small plastic bottle (just a 3.4 oz size since I didn't need much), and it completely evaporated after about two months.

Why isn't ordering online an option? Is it just the shipping costs?
If you truly can't find it anywhere, then those extra few bucks won't really matter anyway.

George Sanchez59 said:I actually picked some up last year at the first pharmacy I walked into in Savannah.
So it's super weird that they don't have it in NYC.
Maybe they just don't stock it since people rarely ask for it—plus, it evaporates so easily. Mine came in a tiny little plastic bottle (just a couple of ounces since I didn't need much), and man, it was totally gone after like two months...

Why isn't buying it online an option? Shipping costs?
If you seriously can't find it anywhere else, then those few extra bucks aren't even gonna matter.

Man, I really wanted to check the purity label in person, but I already pulled the trigger on an online order. It's not like you can't find it in Washington, D.C., but all I could find were those tiny travel sizes—and since I need a bigger stash, I figured I'd save some cash by grabbing the bulk pack.

Thanks to both of you for the help!