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Brookers merocyanine structural formula. en structural formula for Brooker's Merocyanine methyl oxocyclohexadienylidene ethylidene dihydropyridine 'MOED' showing its netural and zwitterion forms no En strukturformel for Brookers merocyanin methyl oxocyclohexadienylidene ethylidene dihydropyridine 'MOED' Own Brutulf px Quaternary