Siwu, O., R. J. Rumampuk, B. Oktavia, E. J. Pongoh, S. M. Tengker, and V. I. Paat. “Formation Reaction of 17α(chlorovinyl-3-Methyl-butene)estradiol Through the Addition Reaction of a Terminal Alkyne to Ethinylestradiol With a ZnCl2 Catalyst: The Addition Reaction of Terminal Alkynes of 17α-Ethinylestradiol With ZnCl2 and HCl Catalyst Mediated by Dichloromethane”. EKSAKTA: Journal of Sciences and Data Analysis, vol. 4, no. 2, May 2023, pp. 1-7, doi:10.20885/EKSAKTA.vol4.iss2.art1.