The IUPAC name of Rhodamine B is 9-(2-Carboxyphenyl)-6-(diethylamino)-N,N-diethyl-3H-xanthen-3-iminium chloride.
Other names include Rhodamine 610, Rhodamine O, Basic Violet 10, C.I. Pigment Violet 1, Brilliant Pink B, C.I. 45170, Tetraethylrhodamine.