Number | Date | Country | Kind |
---|---|---|---|
244/81 | Jan 1981 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
3218359 | Aguadisch | Nov 1965 | |
3546300 | Williamson | Dec 1970 | |
4014941 | Tanaka et al. | Mar 1977 |
Number | Date | Country |
---|---|---|
49-45382 | Dec 1974 | JPX |
681059 | Oct 1952 | GBX |
Entry |
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W. J. Croxall et al., J. Amer. Chem. Soc. 70, 2805 (1948). |