13433-31-3

Photochromiccompound Trimethylindolinomethoxybenzopyrylospiran 1,3,3-Trimethylindolino-8-methoxybenzopyrylospirane 1,3,3-TRIMETHYLINDOLINO-8'-METHOXYBENZOPYRYLOSPIRAN 1,3,3-TriMethylindolino-8'-Methoxybenzopyrylospiran&nbsp 1,3,3-Trimethyl-8'-methoxyspiro[indoline-2,2'-[2H-1]benzopyran] 8-METHOXY-1',3',3'-TRIMETHYLSPIRO[1(2H)-BENZOPYRAN-2,2'-INDOLINE] 1,3,3-Trimethyl-8'-methoxyspiro[1H-indole-2(3H),2'-[2H-1]benzopyran] 1,3,3-TRIMETHYLINDOLINO-8-METHOXYBENZOPYRYLOSPIRAN (PHOTOCHROMIC COMPOUND) 1',3'-Dihydro-1',3',3'-trimethyl-8-methoxyspiro[2H-1-benzopyran-2,2'-[2H]indole] 1',3'-Dihydro-8-methoxy-1',3',3'-trimethylspiro[2H-1-benzopyran-2,2'-[2H]indole]