Number | Date | Country | Kind |
---|---|---|---|
3122260 | Jun 1981 | DEX | |
3122264 | Jun 1981 | DEX |
Number | Date | Country |
---|---|---|
11815 | Nov 1979 | EPX |
48-72146 | Sep 1973 | JPX |
48-72147 | Sep 1973 | JPX |
1101267 | Jan 1968 | GBX |
Entry |
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Lieb. Ann. Chem. 280, 6, (1894). |
J. Chem. Soc., 1950, 2,108. |