Your buyers' customers will reconstitute this as a lyophilized powder for binding assays or in vivo studies, usually at 5mg or 10mg depending on their batch needs, and they'll need it to dissolve cleanly with no visible aggregates—the white powder form handles that well, but we've seen some labs struggle if they don't use sterile water for injection.
It's >99.9% pure by HPLC, which basically means fewer side peaks that could mess with receptor binding, and we include the COA with every shipment—though I'd recommend checking SDS yourself if you're handling it in bulk, since the molecular weight is 4113.6 g/mol and that can affect reconstitution volumes.

We usually have stock on the 10-vial boxes, but the MOQ is 5 boxes for wholsale pricing, and we ship at 2-8°C in insulated packging with a gel pack—lead time is about 20 days or so when we're not backed up.

3 out of 4 procurement folks we deal with ask about payment first, and we take wire transfer or credit card for orders under $2k, but anything above that and it's typically a letter of credit or net 30 if you've got a history with us.

One thing that catches people off guard is the shelf life is 24 months only if you store it dry at 2-8°C—leave it out at room temp for a week and you'll see degradation, so we include a storage card in teh package, but it's not a guarantee.
Actually, we don't recommend this for anything beyond research—it's not suited for clinical or human use, and we've had buyers try to push it into compounding only to get flagged by their own compliance teams, so just keep it in the lab.