2,3-Diamino-6-(difluoromethyl)-4-methoxypyridine
3,6-Diamino-2-(difluoromethyl)-4-nitropyridine
2,5-Diamino-3-(difluoromethyl)-6-nitropyridine
2,4-Diamino-6-(difluoromethyl)-3-nitropyridine
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