Pralatrexate; (2S)-2-(4-(1-(2,4-diaminopteridin-6-yl)pent-4-yn-2-yl)benzamido)pentanedioic acid; CAS No.: 146464-95-1; This complex pteridine-glutamic acid conjugate highlights our capabilities in targeted cancer therapeutics. ChemShuttle operates as both a custom synthesis company and key intermediates provider for antibody-drug conjugates. Our expertise includes click chemistry, PEGylation, and stable bioconjugation techniques for advanced therapeutic modalities.