1,6-Hexanolide 2-Oxepanone 5-17-09-00034 (Beilstein Handbook Reference) 502-44-3 52004-64-5 6-Hexanolactone 6-Hydroxyhexanoic acid lactone 67184-99-0 80137-66-2 BRN 0106919 CAPROLACTONE EINECS 207-938-1 Epsilon-caprolactone HSDB 5670 Hexamethylene oxide, 2-oxo- Hexan-6-olide Hexanoic acid, 6-hydroxy-, epsilon-lactone Hexanoic acid, epsilon-lactone Placcel M epsilon-Kaprolakton [Czech]