Number | Date | Country | Kind |
---|---|---|---|
3244912 | Dec 1982 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2888439 | Simons | May 1959 | |
2888440 | Frazer et al. | May 1959 | |
3398106 | Hostettler et al. | Aug 1968 | |
4386218 | Rasshofer et al. | May 1983 |
Number | Date | Country |
---|---|---|
2948419 | Aug 1981 | DEX |
Entry |
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Naegeli et al, (II) Chem. Abs., vol. 33 (1939) 539. |
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C. Naegeli et al, Helv. Chim. Acta., 21, 1100 (1938). |