It is a pharmaceutical intermediate.
Kenichi Akaji.; Yoshiaki Kiso. Macrocyclization on solid support using Heck reaction.Tetrahedron Lett. 1997, 38 (29),5185-5188 .
Jeffrey B Arterburn.; Kalla Venkateswara Rao.; Marc C Perry. Novel 17α-ethynylestradiol derivatives: Sonogashira couplings using unprotected phenylhydrazines.Tetrahedron Lett. 2000, 41 (6),839-842 .
Gefahrenhinweise (EU): H314-H318
Causes severe skin burns and eye damage. Causes serious eye damage.
Do not breathe dusts or mists. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.