ethyl green ethyl green the dye ethyl green (c.i. 42590; c27h35brcln3) is a triarylmethane dye. it is soluble in water. ethyl green identifiers cas number 14855-76-6 n 3d model (jsmol) interactive image chemspider 76382 n echa infocard 100.027.651 pubchem cid 84672 unii qfq95snb21 n comptox dashboard (epa) dtxsid60991440 inchi inchi=1s/c27h35n3/c1-8-30(6,7)26-19-13-23(14-20-26)27(21-9-15-24(16-10-21)28(2)3)22-11-17-25(18-12-22)29(4)5/h9-20h,8h2,1-7h3/q+2 nkey: zrjyqnpswsgcms-uhfffaoysa-n n smiles cc(c)(c)c1=cc=c(c=c1)c(=c2c=cc(=(c)c)c=c2)c3=cc=c(c=c3)n(c)c except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references its cas number is 7114-03-6 and its smiles structure is c/(c)=c (c=c3)/c=c\c3=c (c2=cc=c((c) (cc)c)c=c2)/c1=c c=c(n(c)c)c=c1. ethyl green is made of crystal violet by adding an ethyl group; crystal violet is therefore a possible contaminant. methyl green is a closely related dye used as a stain in histology. ethyl green is also used as a histological dye.