ChemInform Abstract: Nuclear Magnetic Resonance and X-Ray Study of a (1,4)Benzothiazino(3,2- b) (1,4)benzothiazine and a Bi(benzothiazolyl), Isomeric N,S- Heterocycles Derived from the Reactions of o-Aminobenzenethiol with Some 1,2-Diones.

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