101931-78-6 2-Hydroxy-2-isopropyl-3-pentynoic acid 3-quinuclidinyl ester 3-Pentynoic acid, 2-hydroxy-2-isopropyl-, 3-quinuclidinyl ester 3-Quinuclidyl isopropyl(1-propynyl)glycolate A 3-Quinuclidyl isopropyl(1-propynyl)glycolate B