A propargylic alcohol, enriched in the -enantiomer, has the formula 1wherein R is C1-4 alkoxy, halogen, or C1-4 alkyl optionally substituted by OH or halogen. The protrusion, in a constrained state, extends a distance from an exterior surface of the anchor and, in an unconstrained state, extends further from the exterior surface of the anchor. Moreover, the third land for the unused terminal is included in a wiring pattern due to the connection thereof to other lands or other traces for signals and for grounding with a connecting trace.