Number | Date | Country | Kind |
---|---|---|---|
3007966 | Mar 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2241796 | Leverkusen et al. | May 1939 |
Number | Date | Country |
---|---|---|
1386619 | Jan 1964 | FRX |
402811 | Dec 1963 | CHX |
606871 | Jan 1981 | SUX |
Entry |
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Journal of General Chemistry of the USSR, vol. 45, No. 11, pp. 2488-2492, 1975. |
Chemistry of Heterocyclic Compounds, vol. 15, No. 9, pp. 1258-1264, 1979. |