4-nitrobenzyl (1S,5R,6S)-2-(5,7-dimethylimidazo[5,1-b]thiazol-2-yl)-6-((1R)-1-hydroxyethyl)-1-methyl-1-carbapen-2-em-3-carboxylate   、                                                                                      
碘甲烷                                                                                                                                                                                                                                                                                                          生成                                                 4-nitrobenzyl (1S,5R,6S)-6-((1R)-1-hydroxyethyl)-1-methyl-2-(5,6,7-trimethylimidazo[5,1-b]thiazolium-2-yl)-1-carbapen-2-em-3-carboxylate   、                                                                                             
4-nitrobenzyl (1S,5R,6S)-6-((1R)-1-hydroxyethyl)-1-methyl-2-(5,6,7-trimethylimidazo[5,1-b]thiazolium-2-yl)-1-carbapen-2-em-3-carboxylate iodide