Number | Date | Country | Kind |
---|---|---|---|
3736960 | Oct 1987 | DEX |
Number | Date | Country |
---|---|---|
0297523 | Jun 1988 | EPX |
324820A1 | Jul 1984 | DEX |
1036295 | Feb 1986 | JPX |
Entry |
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Kaiser et al., Helv. Chim. Acta, 64(41):407-424 (1981). |
Susumu et al., Chem. Abs., 106:67626 (1987). |