Number | Name | Date | Kind |
---|---|---|---|
2471922 | Axe | May 1949 | |
2564488 | Mahan | Aug 1951 | |
3435091 | Hofmann et al. | Mar 1969 | |
3849507 | Zuech | Nov 1974 | |
4165440 | Kim | Aug 1979 | |
4316997 | Vaughan | Feb 1982 |
Entry |
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Chemical Abstracts pars.: 44:106906 (1950), 59:151956 (1962), 63:5544C (1965), 75:758876 (1971), and 76:72197M (1972). |