We've been shipping to Australian labs for a while now, and most procurement teams we deal with are looking for consistency more than anything else—batch-to-batch variation is a real headache, so we keep tight specs.
It's a white freeze-dried powder in 10mg vials, ten per box, with HPLC showing 99%+ purity and a molecular weight around 1024 Da; we usually have stock, but confirm lead time for bulk orders since that can shift.
What you get with each order is a full COA, and our company can also provide HPLC chromatogram if your QA team wants to dig in—storage is -20°C away form light, which gives it a 36-month shelf life if you're careful.

Basically, this isn't for anything beyond research use, and it's better than reagent grade for metabolic or cognitive studies, but we don't recommend it for in vivo work without further purification (check your protocol).
Also, for payment we do wire transfer or letter of credit on larger orders, and shipping to Australia takes about 20 days or so via courier with cold chain packging included.
One thing buyers don't always ask: teh vials are sealed under inert gas, so reconstitution is pretty straightforward—just don't leave it out after mixing, it degrades fast at room temp.