Number | Date | Country | Kind |
---|---|---|---|
3606105 | Feb 1986 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4643998 | Hilboll et al. | Feb 1987 |
Number | Date | Country |
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3321012 | Dec 1984 | DEX |
Entry |
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Chem. Abstracts, vol. 65, 1966, 13686e (Sitkina, L., et al., Khim. Geterotsikl. Soedin. Akad. Nauk Latv. SSR 1966 (1), 143-145). |
Kahn, M., et al., J. Chem. Soc. C., 1970, pp. 85-91. |
Chemical Abstracts, 101:72744x (1984) [Ger. Offen. No. 3,241,102, Hilboll, et al., 5/10/84]. |