6-Bromopyridin-3-amine13534-97-932 % similar 2-Chloropyrimidin-5-amine56621-90-032 % similar 4-Aminopyridazine20744-39-231 % similar 2-Methylpyrimidin-5-amine39889-94-631 % similar 6-(5-Aminopyridin-2-yl)pyridin-3-amine52382-48-631 % similar 4-Pyrazoleboronic acid pinacol ester269410-08-430 % similar Methyl 1H-pyrazole-4-carboxylate51105-90-930 % similar P-Phenylenediamine106-50-330 % similar