Koolada in crystal form

[Mr Numpty]

Acetylpyrazine is also a solid in pure form - the "liquid" is a solution of acetylpyrazine (presumably in PG, VG and/or water), not 100% acetylpyrazine.

Yes, sorry, that's what my poorly worded post was trying to convey ... the acetylpyrazine from TFA is a 5% concentration in PG, which is the same concentration in PG that Drip Hacks recommends for its acetylpyridine powder, which I thought might be an indication that they might be similar ... somehow.
Acetylpyrazine, acetylpyridine ... it's only one or two letters difference. How different can they be?