2-Hydroxy-6-amino-5-methyl-4-carboxy pyrimidine 20865-52-5 4-Pyrimidinecarboxylic acid, 6-amino-2-hydroxy-5-methyl- 6-Amino-2-hydroxy-5-methyl-4-pyrimidinecarboxylic acid BRN 0515666 NSC 98529