2-Anilino-3-methyl-6-(N-ethyl-p-toluidino)fluoran;2-Anilino-3-methyl-6-N-ethyl-N-p-tolylaminofluoran;2'-Anilino-3'-methyl-6'-(N-ethyl-N-p-tolylamino)fluoran;2'-Anilino-6'-(N-ethyl-N-p-tolylamino)-3'-methylfluoran;2'-Phenylamino-3'-methyl-6'-(N-ethyl-p-tolyl)aminofluoran;3-(N-Ethyl-p-toluidino)-6-methyl-7-anilinofluoran;3-Ethyl(p-tolyl)amino-6-methyl-7-anilinofluoran;3'-(N-Ethyl-p-toluidino)-6'-methyl-7'-anilinofluoran;3'-(N-Ethyl-p-tolylamino)-6'-methyl-7'-anilinofluoran; ETAC; LDK 1003