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Promethazine

Figure: Capillary Electrochromatogram of promethazine

Experimental Section
Instruments:
Experiments were performed on a TriSepTM-2010 Capillary Electrochromatography system (Shanghai Unimicro Analytical Technologies Co., Ltd.) with a 0-30kV high voltage power supply, a high speed scanning UV detector, a solvent delivery system and HW system software.
Reagent：
methanol（HPLC grade）；TEA；HAc；promethazine
Conditions：
Column：Capillary EP-150-20-5-CBV
Mobile phase： CH3OH:TEA:HAc = 100:0.1:0.1
Flow：0.02 ml/min
Wavelength：254 nm
Applied voltage: 250V/cm;
Temperature：Room temperature
Back pressure：250 Psi