Carbamicacid, butyl-, 2-[(2-cyanoethyl)[4-[(2-cyano-4-nitrophenyl)azo]phenyl]amino]ethylester (9CI); Carbamic acid, butyl-, ester with2-[[p-[(2-cyanoethyl)(2-hydroxyethyl)amino]phenyl]azo]-5-nitrobenzonitrile(8CI)
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