p. 1564 - 1567
(2018/03/23)p. 14374 - 14377
(2014/12/11)p. 6068 - 6071
(2015/01/09)p. 6366 - 6369
(2015/01/16)p. 3287 - 3292
(2013/04/24)p. 3748 - 3751
(2012/09/07)p. 1195 - 1204
(2007/10/03)6-nitrophthalide
sulfuric acid
o-carboxybenzaldehyde
N,N-dimethyl-formamide
2-bromo-5-nitrobenzoic acid