Journal of Heterocyclic Chemistry
Volume 27 Issue 5
A synthetic entry to isoxazolo[5,4-d]pyrimidine-4(5H)thione and isothiazolo[4,3-d]isoxazole (p 1481-1484)
C. B. Vicentini, A. C. Veronese, T. Poli, M. Guarneri, P. Giori, V. Ferretti
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http://dx.doi.org/10.1002/jhet.5570270555