6-acetylamino-2-methyl-5-trimethylsilanylethynyl-nicotinic acid methyl ester
2-amino-5-cyano-6-methylpyridine
6-amino-5-trimethylsilylacetylenyl-2-methyl-nicotinic acid methyl ester
methyl 6-amino-5-iodo-2-methylnicotinate
6-amino-2-methylpyridine-3-carboxylic acid?