1-(3-Chlorophenyl)-5-((4-methoxy-2-nitrophenyl)azo)-3-methylbarbituric acid 1833-72-3 2,4,6(1H,3H,5H)-Pyrimidinetrione, 1-(3-chlorophenyl)-5-((4-methoxy-2-nitrophenyl)azo)-3-methyl- EINECS 217-395-2