TB-500 5mg x 10 Vials. TB-500 is a catalogue designation used in peptide research. Its relationship to thymosin beta-4 terminology requires particular care: the name alone is not a universally sufficient sequence specification. Before selecting a molecular reference, establish whether the supplied material is a defined fragment, a modified peptide or a full-length thymosin-related preparation. Pack: 10 vials. 5 mg per vial; 50 mg nominal total across 10 vials. Intended exclusively for controlled in vitro laboratory research; not for human or veterinary use.