HC Blue No. 1, HC blue no. 1 (purified), 4-bis(2'-hydroxy-ethyl)amino-1-methyl-amino-2-nitro-benzene, HC Blue Number 1, EINECS 220-495-9, HC BLUE NO 1, 2-methylamino-5-bis(2'-hydroxyethyl)aminonitrobenzene, 2,2'-{[4-(methylamino)-3-nitrophenyl]imino}bisethanol, HC Blue 1
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