An internal standard for the quantification of ractopamine
货号:ajcx28532
CAS:1219794-72-5
分子式:C18H20D3NO3 ? HCl
分子量：340.9
溶解度:DMSO: soluble with sonication,Water: soluble with heat
纯度：98%
存储：Store at -20°C
库存：现货

Background:

Ractopamine-d₃is intended for use as an internal standard for the quantification of ractopamine by GC- or LC-MS. Ractopamine is a trace amine-associated receptor 1 (TAAR1) agonist.¹It increases chloride conductance inX. laevisoocytes 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 . It selectively induces chloride conductance in TAAR1- and CFTR-expressing oocytes over those expressing the human β₂-adrenergic receptor (β₂-AR) and CFTR at 36 µM. However, it is also considered a β₂-AR agonist that binds to β₂-ARs (K_i= 0.18 µM for the recombinant human receptor expressed in Sf9 cells) and induces relaxation of isolated guinea pig trachea with an EC₅₀value of 9.1 nM.²Formulations containing ractopamine have been used as food additives in livestock to increase weight gain and leanness and improve feed efficiency.

1.Liu, X., Grandy, D.K., and Janowsky, A.Ractopamine, a livestock feed additive, is a full agonist at trace amine-associated receptor 1J. Pharmacol. Exp. Ther.350(1)124-129(2014) 2.Kern, C., Meyer, T., Droux, S., et al.Synthesis and pharmacological characterization of β2-adrenergic agonist enantiomers: ZilpaterolJ. Med. Chem.52(6)1773-1777(2009)