Propanedinitrile,(1,1-dioxido-2-phenyl-4H-1-benzothiopyran-4-ylidene)- (9CI); Propanedinitrile,(2-phenyl-4H-1-benzothiopyran-4-ylidene)-, S,S-dioxide; 4H-1-Benzothiopyran,propanedinitrile deriv.
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