1. Insect Chemosterilants. V. Derivatives of Melamine
2. J. E. Oliver, S. C. Chang, R. T. Brown, J. B. Stokes and A. B. Borkovec, J. Med. Chem., in press.
3. The 1,3,5-thiadiazine system is known. For example, 4,6-diamino-1,3,5-thiadiazine-2-thione, the unsubstituted counterpart of 5a and 5b has been prepared from dicyandiamide and carbon disulfide: D. W. Kaiser and R. L. Sperry, U. S. Patent 2,397,421 (1946);
4. Chem. Abstr., 40, 40898 (1946).