Not Less Than - 95%
4-Nitrophenyl 6,7,9,10-tetrahydro-8H-6,10-methanoazepino[4,5-g]quinoxaline-8-carboxylate;
4-Nitrophenyl 9,10-dihydro-6H-6,10-methanoazepino[4,5-g]quinoxaline-8(7H)-carboxylate;
6,10-Methano-8H-pyrazino[2,3-h][3]benzazepine-8-carboxylic acid, 6,7,9,10-tetrahydro-, 4-nitrophenyl ester;4-Nitrophenyl 6,7,9,10-tetrahydro-6,10-methano-8H-pyrazino[2,3-h][3]benzazepine-8-carboxylate