2-Chloro-6-methyl-3-pyridinecarbonitrile2-Chloro-6-methylpyridine-3-carbonitrile2-Chloro-3-cyano-6-methylpyridine2-Chloro-6-methylnicotinonitrile 99%2-chloro-6-methylnicotinonitrile2-Chloro-6-methyl-nicotinonitrile2-氯-6-甲基-3-吡啶甲腈2-Chloro-6-methyl-3-pyridinecarbonitrile2-chloro-6-methylpyridine-3-carbonitrile2-Chloro-6-methylnicotinonitrile2-氯-3-氰基-6-甲基吡啶2-Chloro-3-cyano-6-methylpyridine