Number | Date | Country | Kind |
---|---|---|---|
50309/73 | Oct 1973 | UK |
Number | Name | Date | Kind |
---|---|---|---|
3808212 | Renth et al. | Apr 1974 |
Entry |
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E. Merck A.G., Chemical Abstracts, Vol. 66, p. 2587u, (1967). |
Burger, Medicinal Chemistry, 3rd Ed., pp. 636 and 638 Part I and p. 1588 Part II. |