1H-Benz(de)isoquinoline-1,3(2H)-dione, 2-ethyl-6-hydroxy-5-((2-methoxy-4-nitrophenyl)azo)- 2-Ethyl-6-hydroxy-5-((2-methoxy-4-nitrophenyl)azo)-1H-benz(de)isoquinoline-1,3(2H)-dione 4-Hydroxy-3-(2-methoxy-4-nitrophenylazo)-N-ethyl-1,8-naphthalenedicarboximide 42358-36-1 EINECS 255-771-8