CAS 432545-63-6 (free amine) appears in our catalog under these names: Methotrexate-d3 Triglutamate Trifluoroacetate, Methotrexate-d3 Diglutamate Trifluoroacetate, Methotrexate-d3 Heptaglutamate Trifluoroacetate, Methotrexate-d3 Tetraglutamate Trifluoroacetate. Offered by: Chemat Brand. Available pack sizes: on request.