我司供应如下培美曲塞二钠中间体，如有需要请联系13810001261，杨会影。MSN:ls-002@hotmail.com 4-[2-(2-Amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoicacidmethylester CASNo:155405-80-4 4-[2-(2-Amino-4,7-dihydro-4-oxo-1H-pymol[2,3-d]pyrimodin-5-yl)ethyl]benzoicacid CASNo:137281-39-1