Structure identification and application of unknown impurities in benzalkonium chloride pharmaceutical excipients*
ZHANG Chun-li, ZHOU Xiao-hua, SHI Hai-wei, YUAN Yao-zuo, WANG Ya, TANG Hui, WANG Bao-cheng
Chinese Journal of Pharmaceutical Analysis . 2025, (1): 164 -174 .  DOI: 10.16155/j.0254-1793.2024-0252