151519-02-7 2H-Pyran-2-one, 5-ethyl-5,6-dihydro-6-(2-hydroxy-4-methoxy-3,5-dimethyl-7-nonenyl)-, (5R-(5alpha,6alpha(2R*,3S*,4R*,5S*,7E)))- 5-Ethyl-5,6-dihydro-6-(2-hydroxy-4-methoxy-3,5-dimethyl-7-nonenyl)-2H-pyran-2-one PA 48153C Pironetin