Number | Date | Country |
---|---|---|
1315630 | May 1973 | GBX |
1321799 | Jun 1973 | GBX |
Entry |
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Chemical Abstracts, 83:28051e (1975) [Tosunyan, A. et al., Arm. Khim. Zh., 1975, 28(1), 42-47]. |
Chemical Abstracts, 78:4239t (1973) [Ger. Ols. 2,215,721, Fosker et al., Oct. 5, 1972]. |