3-Methoxytyramine (hydrochloride)

3-Methoxytyramine hydrochloride is an metabolite of dopamine which can activate trace amine associated receptor 1 (TAAR1). IC50 & Target:TAAR1^[1] In Vitro:The intensity of the fluorescence developed is in a linear relation to the amount of 3-Methoxytyramine hydrochloride presented in the sample up to at least 1 μg. When a high concentration of dopamine is present in the reaction mixture, there is some reduction in the fluorescence derived from 3-Methoxytyramine hydrochloride^[1]. In Vivo:The extracellular DA metabolite 3-Methoxytyramine hydrochloride (3-MT) induces significant behavioral activation in DDD mice. This activity however, is mostly presented as a set of disorganized abnormal movements that includes tremor, head bobbing, straub tail, grooming and abnormal orofacial movements rather than normal forward activity. No effect is observed when 3-Methoxytyramine hydrochloride is infused at doses below 9 μg, at 9 μg and higher doses 3-Methoxytyramine hydrochloride dose-dependently causes transient behavioral activation with a complex set of behaviors. In particular, transient hyperactivity and stereotypy, sniffing, grooming, rearing and mild abnormal involuntary movements (AIMs) at the level of limbs is observed after infusion of 9 μg of 3-Methoxytyramine hydrochloride. Similar behaviors are also observed after 18 μg of 3-Methoxytyramine hydrochloride with the additional appearance of tremor as well as oral and whole body AIMs^[1].