methyl 8-chloro-2-(2,2-dimethoxyacetyl)oct-4-ynoate

acetic acid,2-(6-chlorohex-2-ynyl)-4,4-dimethoxybutane-1,3-diol

[2-(1-acetyloxy-2,2-dimethoxyethyl)-8-cyanooct-4-ynyl] acetate

6-chloro-1-(tetrahydropyranyle-2-oxy) hex-2-yne

7-(tetrahydro-2'H-pyran-2'-yloxy)hept-5-ynoic acid