Ractopamine-</wbr>d<sub>3</sub> (hydro</wbr>chloride)

Ractopamine-d3 (hydrochloride)

CAT N°: 37207
Price:

132.00

Ractopamine-d3 is intended for use as an internal standard for the quantification of ractopamine (Item No. 27613) by GC- or LC-MS. Ractopamine is a trace amine-associated receptor 1 (TAAR1) agonist.{64567} It increases chloride conductance in X. laevis oocytes expressing the human cystic fibrosis transmembrane conductance regulator (CFTR) and mouse TAAR1 (EC50 = 16 µM), an effect that can be blocked by the TAAR1 antagonist EPPTB (Item No. 34330). It selectively induces chloride conductance in TAAR1- and CFTR-expressing oocytes over those expressing the human ?2-adrenergic receptor (?2-AR) and CFTR at 36 µM. However, it is also considered a ?2-AR agonist that binds to ?2-ARs (Ki = 0.18 µM for the recombinant human receptor expressed in Sf9 cells) and induces relaxation of isolated guinea pig trachea with an EC50 value of 9.1 nM.{64568} Formulations containing ractopamine have been used as food additives in livestock to increase weight gain and leanness and improve feed efficiency.

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