2,5-Bis(2-hydroxyethylamino)-3,6-bis(carboethoxyamino)-1,4-benzoquinone 77036-53-4 Azq diaminoalcohol Azqdaa Carbamic acid, (2,5-bis((2-hydroxyethyl)amino)-3,6-dioxo-1,4-cyclohexadiene-1,4-diyl)bis-, diethyl ester