Synonyms:
trimethylindolinobenzopyrylospiran ; 1,3,3-trimethylspiro[1h-indole-2(3h),2'-[2h-1]benzopyran] ; 1',3',3'-trimethylspiro[1(2h)-benzopyran-2,2'-indoline] ; 1,3,3-trimethylindolinobenzopyrylospiran ; 1,3,3-trimethylindolinobenzopyrylospiran [photochromic compound] ; 1,3,3-trimethylindolinobenzopyrylospirane ; 1',3',3'-trimethylspiro[chromene-2,2'-indole] ; 1,3,3-trimethylspiro[indoline-2,2'-[2h][1]benzopyran] ; 1',3',3'-trimethylspiro[chromene-2,2'-indoline] ; 1,3,3-trimethylspiro[indoline-2,2'-[2h-1]benzopyran]