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A new sensitive method for determination of salbutamol, as a nutrient repartitioning agent, in livestock is presented to protect the consumers. Eight nano-baskets of p-tert -calix[4]arene bearing di-[ N -(X)sulfonyl carboxamide] and di-(1-propoxy) in partial-cone conformation were synthesized and were used to prepare bended phases of HPLC–UV. The new synthesized bonded-phases were characterized and optimized, the bonding interactions of solute and stationary phases were examined and the main interactions were reported. The results revealed that for the best bonded-phase, the LOD and LOQ were 0.02 and 0.06 μg/mL, respectively. Keywords : Bonded-Phase; Partial-Cone Conformation; Calixarene; Salbutamol; nanobasket. e-mail: pourabdollah@iaush.ac.ir 1. INTRODUCTION Salbutamol (albuterol) is the international nonproprietary (United States) adopted name for 4-(2-(tert-butylamino)-1-hydroxyethyl)-2-(hydroxymethyl)phenol (Figure 1), which is used for the treatment of asthma in both humans and animals, is a synthetic β

journal of the chilean chemical society

PREPARATION AND CHARACTERIZATION OF BONDED-PHASES OF CALIXARENE-SULFONYL-CARBOXAMIDES IN PARTIAL-CONE CONFORMATION FOR DETERMINATION OF SALBUTAMOL IN LIVESTOCK BY NANO-MEDIATED BONDED-PHASES: NANO-BASKETS OF CALIXARENE IN PARTIAL-CONE CONFORMATION