Development of a green and rapid ethanol-based HPLC assay for aspirin tablets and feasibility evaluation of domestically produced bioethanol in Thailand as a sustainable mobile phase - Thanayutsiri Thana; Mantadilok Siwa; Sapsin Jiradet; Tungwattanaviboon Thada; Wongwatanasin Jetsada; Opanasopit Praneet; Ngawhirunpat Tanasait; Rojanarata Theerasak (Green Processing and Synthesis)