| Original language | English |
|---|---|
| Patent number | CN1280555 |
| IPC | C07C 205/ 12 A I |
| Priority date | 9/10/97 |
| State | Published - 17 Jan 2001 |
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Research output: Patent
| Original language | English |
|---|---|
| Patent number | CN1280555 |
| IPC | C07C 205/ 12 A I |
| Priority date | 9/10/97 |
| State | Published - 17 Jan 2001 |