H-Arg-Lys-OH TFA

• CAT Number: I046081
• Molecular Formula: C14H27F3N6O5
• Molecular Weight: 416.40
• Purity: ≥95%
• Synonyms: (2S)-6-amino-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]hexanoic acid;2,2,2-trifluoroacetic acid
• InChI: InChI=1S/C12H26N6O3.C2HF3O2/c13-6-2-1-5-9(11(20)21)18-10(19)8(14)4-3-7-17-12(15)16;3-2(4,5)1(6)7/h8-9H,1-7,13-14H2,(H,18,19)(H,20,21)(H4,15,16,17);(H,6,7)/t8-,9-;/m0./s1
• InChIKey: OPHRNGXTGITHQT-OZZZDHQUSA-N
• SMILES: C(CCN)C[C@@H](C(=O)O)NC(=O)[C@H](CCCN=C(N)N)N.C(=O)(C(F)(F)F)O

H-Arg-Lys-OH TFA（Cat No.:I046081）is a dipeptide composed of arginine and lysine, supplied as its trifluoroacetate (TFA) salt for enhanced stability and solubility. Both residues carry positively charged side chains at physiological pH, making this dipeptide highly basic and useful for studying electrostatic interactions in proteins and peptides. H-Arg-Lys-OH TFA is often applied in research on protein–nucleic acid binding, antimicrobial peptide design, and molecular recognition. It also serves as a versatile building block in peptide synthesis, supporting exploration of structure–activity relationships in biochemical systems.