6,7,8,9-tetraphenyl-1,2-diaza-spiro[4.4]nona-1,3,6,8-tetraene-3,4-dicarboxylic acid dimethyl ester

[ CAS No. ]:
23227-65-8

[ Name ]:
6,7,8,9-tetraphenyl-1,2-diaza-spiro[4.4]nona-1,3,6,8-tetraene-3,4-dicarboxylic acid dimethyl ester

[Synonym ]:
3,4-Dicarbomethoxy-6,7,8,9-tetraphenyl-1,2-diazaspiro<4,4>nonatetraen
1,2,3,4-Tetraphenyl-7,8-bis-(methoxycarbonyl)-5,6-diaza-spiro<4.4>nona-1,3,5,7-tetraen
6,7,8,9-Tetraphenyl-1,2-diaza-spiro[4.4]nona-1,3,6,8-tetraene-3,4-dicarboxylic acid dimethyl ester