Copyright © Philip M. Parker, INSEAD. Terms of Use.

| Year | Description |
| 1998 | Invention patented by Erik De Vroom and Thomas Van Der Does on April 31th, 1998. Abstract: An efficient process for de-esterification has been provided for by application of special tetrahalogenides. By applying this process a new compound, viz. cefesone, and especially the E-isomer thereof, has been prepared. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.