H-Arg-Lys-OH TFA is a dipeptide formed from L-arginine and L-lysine residues.

Physicochemical Properties

Molecular Formula	C14H27F3N6O5
Molecular Weight	416.40
Related CAS #	H-Arg-Lys-OH;40968-46-5
Appearance	White to off-white solid powder
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: (1). This product requires protection from light (avoid light exposure) during transportation and storage.(2). Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture.
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

ln Vitro	The formation of lysine-lysine and lysine-arginine cross-links, which create physiologically significant advanced glycation end products (AGEs), has been documented in only a small number of ex vivo tissues to date[1].
References	[1]. Effect on the mechanical properties of type I collagen of intra-molecular lysine-arginine derived advanced glycation end-product cross-linking. J Biomech. 2018 Jan 23;67:55-61.

Solubility Data

Solubility (In Vitro)	H2O :~125 mg/mL (~300.19 mM)
Solubility (In Vivo)	Solubility in Formulation 1: 100 mg/mL (240.15 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with sonication.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.4015 mL	12.0077 mL	24.0154 mL
	5 mM	0.4803 mL	2.4015 mL	4.8031 mL
	10 mM	0.2402 mL	1.2008 mL	2.4015 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.