Camostat
CAS: 59721-29-8
Approvals: Japan
$0.10/mg in bulk (2 week lead time), or $1.25/mg in-stock
https://en.wikipedia.org/wiki/Camostat
https://www.adooq.com/camostat-mesylate.html
https://www.medkoo.com/products/11665
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E-64d
CAS: 88321-09-9
LD50 in rats: >100000 mg/kg
$12.5/mg in-stock
https://www.sigmaaldrich.com/catalog/product/sigma/e8640
https://www.apexbt.com/e-64d.html
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Obviously: untested, unknown dosage and not FDA approved. It would need a little DMSO to dissolve both.