4-(Difluoromethyl)-2-nitropyridine-3-acetic acid
2,5-Diamino-4-(difluoromethyl)-3-methylpyridine
3-(Difluoromethyl)-5-nitropyridine-2-acetic acid
2,4-Diamino-5-(difluoromethyl)-3-methylpyridine
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