TY - JOUR T1 - Counter-Current chromatography separation of isatin derivatives using the sandmeyer methodology JO - Journal of the Brazilian Chemical Society A1 - Almeida, Márcia R. A1 - Leitão, Gilda G. A1 - Silva, Bárbara V. A1 - Barbosa, Jussara P. A1 - Pinto, Angelo C. SN - 0103-5053 UL - 10.1590/S0103-50532010000400025 VL - 21 Y1 - 2010 PB - Brasil ER -