Number | Date | Country | Kind |
---|---|---|---|
1045/79 | Feb 1979 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
1756537 | Cotton | Apr 1930 | |
2191820 | Berretta | Feb 1940 |
Entry |
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Gilbert, "Sulfonation and Related Reactions", pp. 2-6, (1965). |
Roberts, "Modern Experimental Chemistry", pp. 35-39 (1969). |