Product Name
Tetrahydropalmatine hydrochloride
Synonyms
DL-Tetrahydropalmatine hydrochloride
Description
Tetrahydropalmatine (DL-Tetrahydropalmatine) hydrochloride possesses analgesic effects. Tetrahydropalmatine hydrochloride acts through inhibition of amygdaloid release of dopamine to inhibit an epileptic attack in rats.
Structural Formula
Tetrahydropalmatine hydrochloride
Solubility
DMSO : 25 mg/mL(63.79 mM;Need ultrasonic) H2O : 4 mg/mL(10.21 mM;ultrasonic and warming and heat to 60°C)
Source
Plants >Papaveraceae > Corydalis yanhusuoW. T. Wang
Storage
4℃, sealed storage, away from moisture and light
Shipping
Room temperature in continental US; may vary elsewhere.
SMILES
COC1=CC=C2C(CN3CCC4=CC(OC)=C(OC)C=C4C3C2)=C1OC.[H]Cl
In Vivo
Tetrahydropalmatine (THP), an active component isolated from corydalis (a Chinese herbal medicine), possesses analgesic effects. Picrotoxin treatment alone has a significant effect on the following activity measure: there is an increase in horizontal motion time (HMT), vertical motion time (VMT), clockwise turnings (CT), anticlockwise turning (ACT) and a decrease in freezing time (FT). Tetrahydropalmatine treatment alone causes a decrease in HMT, VMT and total distance traveled (TDT), but an increase in FT. Pretreatment of rats with an i.p. dose of 10 mg/kg or 15 mg/kg of Tetrahydropalmatine significantly attenuates the Picrotoxin-induced enhancement in HMT, VMT, CT, ACT and TDT, as well as reduction in FT. Another 48 rats under urethane anesthesia are randomly divided into six groups, each of eight rats. The s.c. injection of Picrotoxin causes an increase in amygdaloid release of dopamine (DA), while i.p. injection of Tetrahydropalmatine at 10 mg/kg has an insignificant effect on amygdaloid release of DA. Again, the Picrotoxin-induced increase in amygdaloid release of DA is significantly attenuated by pretreatment with Tetrahydropalmatine. The Picrotoxin-induced augmented amygdaloid release of DA is almost completely abolished by pretreatment with Tetrahydropalmatine 30 min before s.c. injection of Picrotoxin.
Datasheet 
