2-hydroxy-3-methyl-2-(1-propynyl)-valeric aci 1-methyl-4-piperidyl ester |
1-methyl-4-piperidyl sec-butyl(1-propynyl)glycolate a |
1-methyl-4-piperidyl sec-butyl(1-propynyl)glycolate b |
2-hydroxy-3-methyl-2-(1-propynyl)-pentanoic aci 1-methyl-4-piperidyl este |
2-hydroxy-3-methyl-2-(1-propynyl)-valeric aci1-methyl-4-piperidyl ester |