Application:mainly used for leukocythemia,from last year it was fouded to have great function for chronic infectious arthritis molecular weight : 454.44Specification 1: USP29 tablet grade USD900.00/KGSpecificaion 2: USP 29 injection grade USD1085.00/KGSpecificaion 3: USP 33/EP 5 USD1420.00/KGSpecificaion 4:USP 34/USP 35 USD1500.00/KG Methotrexate