2-Mercapto-5-(4-chlorobenzyl)orotic aldehyde 2-Mercapto-5-(p-chlorobenzyl)orotic aldehyde 31349-81-2 4-Pyrimidinecarboxaldehyde, 5-((4-chlorophenyl)methyl)-1,2,3,6-tetrahydro-6-oxo-2-thioxo- (9CI) NSC 123890