Supplier Page from Cayman Chemical for MDA-19 4-hydroxybenzoyl metabolite
(±)-cis-3-methyl Norfentanyl from Cayman Chemical
para-methyl Methoxyacetyl fentanyl (hydrochloride) from Cayman Chemical
Sufentanil-d5 (CRM) from Cayman Chemical
Tizanidine (hydrochloride) from Cayman Chemical