Number | Date | Country | Kind |
---|---|---|---|
9-056019 | Mar 1997 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2961377 | Shapiro et al. | Nov 1960 | |
4062950 | Frommer et al. | Dec 1977 |
Number | Date | Country |
---|---|---|
0248999 | Dec 1987 | EPX |
Entry |
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Windholz et al., The Merck Index, 10th Ed. (1983) p. 723-724 ab.No. 4866 |