1592-43-4

1,3,3-Trimethylindolino-&beta Trimethylindolinonaphthopyrylospiran -naphthopyrylospiran [Photochromic Compound] 1,3,3-Trimethylindolino-β-naphthopyrylospiran 1,3,3-Trimethylindolino-β-naphthopyrylospiran 1,3,3-TRIMETHYLINDOLINO-BETA-NAPHTHOPYRYLOSPIRAN 1,3,3-Trimethylindolino-beta-naphthopyrylospirane 1',3',3'-Trimethylspiro[benzo[f]chromene-3,2'-indoline 1,3,3-TRIMETHYLSPIRO[INDOLINE-2,3'-[3H]NAPHTH[2,1-B]PYRAN] 1',3',3'-Trimethylspiro[3H-naphtho[2,1-b]pyran-3,2'-indoline] 1',3',3'-Trimethylspiro[3H-naphtho[2,1-b]pyran-3,2'(3'H)-[1H]indole] 1,3,3-Trimethylindolino-β-naphthopyrylospiran [Photochromic Compound 1,3,3-TriMethylindolino-β-naphthopyrylospiran [PhotochroMic CoMpound] 1,3-Dihydro-1,3,3-trimethylspiro[2H-indole-2,3'-[3H]naphtho[2,1-b]pyran] 1,3,3-TRIMETHYLINDOLINO-BETA-NAPHTHOPYRYLOSPIRAN [PHOTOCHROMIC COMPOUND] 1,3,3-Trimethylindolino-β-naphthopyrylospiran [Photochromic Compound]&gt 1,3,3-Trimethyl-1,3-dihydrospiro[2H-indole-2,3'-[3H]naphtho[2,1-b]pyran] 1',3',3'-Trimethyl-5,6-[1,3]butadienospiro[2H-1-benzopyran-2,2'-indoline] Spiro[2H-indole-2,3'-[3H]naphtho[2,1-b]pyran], 1,3-dihydro-1,3,3-trimethyl- 1',3'-Dihydro-1',3',3'-trimethylspiro[3H-naphtho[2,1-b]pyran-3,2'-[2H]indole]