Ethanol is found at the liquor store. Depending on where you live, it will come in 175 or 195 proof(Everclear).
However, I would be careful about spraying leather with alcohol as it may damage it.

Compound you mention are not going to be soluble in any polar or organinc solvent that I can think of. As mentioned you can mix and shake when needed but start experimenting with about a gram of compound to 10 ml of water, shake and spray very light even coat.

If you ever use a strop dressing would it not be a good idea to mix and work in at that time?