Product Name  Synephrine
CAS No.  94-07-5
Molecular Formula  C9H13NO2
Molecular Weight  167.21
Purity  98% HPLC
Package  25 kg/drum


Synephrine is a phenethylamine alkaloid that is 4-(2-aminoethyl)phenol substituted by a hydroxy group at position 1 and a methyl group at the amino nitrogen. It has a role as a plant metabolite and an alpha-adrenergic agonist. It is a phenethylamine alkaloid, a member of phenols and a member of ethanolamines. It is a conjugate base of a synephrinium.


Synephrine is a α-adrenergic receptor (AR) agonist with vasoconstricting properties.

Synephrine is widely used in weight loss and weight management as well as in sports performance products, which has antidepressant-like effects in the murine models of forced swimming and tail suspension, it also exerts potent anti-inflammatory effects by inhibition of the NF-κB signaling pathway. Synephrine inhibits eotaxin-1 expression via the STAT6 signaling pathway.