Chloromethylketone methotrexate is a chemical compound registered under CAS number 83160-47-8, with the molecular formula C21H23ClN8O4 and a molecular weight of about 486.91 g/mol. ChemIBD supplies Chloromethylketone methotrexate for laboratory research and bulk production; product code 968001. Send an inquiry for purity, packaging, price and lead time.