141018-30-6 2-Hexynyl-5'-N-ethylcarboxamidoadenosine 2-Hexynyl-NECA 2-Hexynyladenosine-5'-N-ethylcarboxamide Heneca beta-D-Ribosuranuronamide, 1-(6-amino-2-(1-hexynyl)-9H-purin-9-yl)-1-deoxy-N-ethyl-