| Relationships | Role | Relationship Start | Relationship End |
| Degussa Ag | Parent | 10/1/1992 | 12/8/1997 |
| Asta Medica Inc. | Subsidary | 10/1/1992 | 12/8/1997 |
| Relationships | Role | Relationship Start | Relationship End |
| Degussa Ag | Parent | 10/1/1992 | 12/8/1997 |
| Asta Medica Inc. | Subsidary | 10/1/1992 | 12/8/1997 |