36877-69-7 37383-95-2 56573-67-2 62697-12-5 9-(2-Carboxy-5(or 6)-isothiocyanatophenyl)-3,6-bis(diethylamino)xanthylium chloride EINECS 253-248-9 Rhodamine B isothiocyanate Rhodamine isothiocyanate Xanthylium, 9-(2-carboxy-5(or 6)-isothiocyanatophenyl)-3,6-bis(diethylamino)-, chloride