you said 'The other option is to just procure chemicals through other products. Naphtha is basically a mixture of hexanes. You can buy a lot of nitrate salts used for food or gardening. It’s not hard to procure metals.' but this americanelements link doesn't seem to be a case of 'procure chemicals through other products' but rather 'buy from a place that lists things by cas number and probably only sells to corporations'

Try eBay.

https://www.ebay.com/itm/125395009075 etc

that also doesn't look like 'procure chemicals through other products', that's a listing for 10 grams of, supposedly, pure strontium