| alpha-(2-methylbut-1-yn-3-en-1-yl)-2-thiopheneglycolic aci 1-methyl-4-piper |
| idyl ester |
| 1-methyl-4-piperidyl-2-thienyl(3-methyl-but-1-yn-3-enyl)glycolate |
| alpha-(2-methylbut-1-yn-3-en-1-yl)-2-thiopheneglycolic acid 1-methyl-4-piperi |
| dyl ester |
| 2-hydroxy-5-methyl-5-(2-thienyl)-hexa-3-yn-5-enoic aci 1-methyl-4-piperid |
| alpha-(2-methylbut-1-yn-3-en-1-yl)-2-thiopheneglycolic aci 1-methyl-4-piperidyl ester |
