Number | Date | Country | Kind |
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100 53 380 | Oct 2000 | DE |
Number | Name | Date | Kind |
---|---|---|---|
5011996 | Kiel et al. | Apr 1991 | A |
Number | Date | Country |
---|---|---|
355 351 | Feb 1990 | EP |
969 977 | Sep 1964 | GB |
Entry |
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Houben-Weyl) Methoden Der Organischen Chemie |
Band IV/1c; 1980, pp. 436-437. |