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Synthesis and spectroscopic property of 6-phenylazo-coumarin- 3-ethyl formate catalyzed by potassium carbonate
ZENG Yu-cai, LIU Xiao-ling, LI Lan
China Surfactant Detergent & Cosmetics . 2014, (9): 512 -516 .  DOI: 10.13218/j.cnki.csdc.2014.09.115