The meso carbon atom of the methine linkage of the dye is attached to the nitrogen atom of an amino group . 该染料的甲川链上的中位碳原子与氨基的氮原子相连。
2.
The meso carbon atom of the methine linkage of the dye is attached to the nitrogen atom of a group which forms an enamine with the methine linkage of the dye . 该染料甲川链上的碳原子与氨基的氮原子相连，而该氮原子又与染料的甲川链形成烯胺。
