Number | Date | Country | Kind |
---|---|---|---|
3029980 | Aug 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3072530 | Hofmann et al. | Jan 1963 | |
3226399 | Allen et al. | Dec 1965 |
Number | Date | Country |
---|---|---|
1905881 | Sep 1969 | DEX |
2626890 | Dec 1977 | DEX |
Entry |
---|
Can. J. Chem., 42, 514/1964. |