Human chorionic gonadotropin 5. synthesis of a triaconta peptide corresponding to the carboxyl terminal sequence 116 145 of the beta subunit of human chorionic gonadotropin Okada, Y.; Iguchi, S.; Yagyu, M.; Kawasaki, K.; Yamaji, K.; Takagi, T.; Tanizawa, O. Chemical and Pharmaceutical Bulletin 28(9): 2714-2719 1980 0009-2363 https://eurekamag.com/research/005/591/005591133.php