Number | Date | Country | Kind |
---|---|---|---|
1250/91 | Apr 1991 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
4791204 | Jost et al. | Dec 1988 |
Number | Date | Country |
---|---|---|
321919 | Jun 1989 | EPX |
3832064 | Mar 1990 | DEX |
3-26767 | Jan 1991 | JPX |
Entry |
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Chem. Abstract 111:196751y, 1987. |
Chem. Abstract 113:61388f, 1988. |