Supplier Page from Cayman Chemical for para-Fluorofentanyl-13C6 (hydrochloride)
HMMA (hydrochloride) from Cayman Chemical
meta-Fluoroisobutyryl fentanyl (hydrochloride) (exempt preparation) from Cayman Chemical
para-methyl Methoxyacetyl fentanyl (hydrochloride) from Cayman Chemical
Sufentanil-d5 (CRM) from Cayman Chemical