Number | Date | Country | Kind |
---|---|---|---|
3626210 | Aug 1986 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3269904 | Bernstein et al. | Aug 1966 | |
3883545 | Lohaus et al. | May 1975 | |
3968118 | Lohaus et al. | Jul 1976 | |
3972888 | Lohaus et al. | Aug 1976 | |
4797409 | Lohaus et al. | Jan 1989 |
Number | Date | Country |
---|---|---|
0241918 | Oct 1987 | EPX |
1795270 | Dec 1971 | DEX |
2214608 | Oct 1973 | DEX |
Entry |
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A. Weissberger, The Chemistry of Heterocyclic Compounds, vol. 17, p. 96. |
A. Weissberger, The Chemistry of Heterocyclic Compounds, pp. 178-179 & pp. 284-285. |