4-(Difluoromethyl)-2,5-dimethoxy-3-nitropyridine
6-(Difluoromethyl)-2,4-dimethoxy-3-fluoropyridine
2-(Difluoromethyl)-4,6-dimethoxy-3-nitropyridine
3-(Difluoromethyl)-2,4-dimethoxy-6-fluoropyridine
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