3-methyl-2-(1-phenyl-1,4-dihydro-pyridin-4-ylmethylene)-2,3-dihydro-benzothiazole   、                                                                                      
1-phenyl-pyridinium; iodide                                                                                                                                                                                              以
                                                                                         
吡啶                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 4-<(N-Methyl-2,3-dihydro-benzothiazolyliden-(2))-methyl>-N-phenyl-pyridiniumiodid (3-Methyl-1'-phenyl-4'-pyrido-thiacyanin-iodid)