Number | Date | Country | Kind |
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62-223142 | Sep 1987 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4478753 | Hotta et al. | Oct 1984 | |
4500459 | Hotta et al. | Feb 1985 |
Entry |
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Y. C. Tong, Journal of Heterocyclic Chemistry, 12, 1975, pp. 451-453. |
Yamashita Chem Abs 108 204598 (1988). |