Cathepsin L-IN-2 (Z-Phe-Phe-FMK) is a potent and irreversible inhibitor of cathepsin L and cathepsin B.

Physicochemical Properties

Molecular Formula	C27H27FN2O4
Molecular Weight	462.512690782547
Exact Mass	462.195
CAS #	108005-94-3
PubChem CID	16760359
Appearance	White to off-white solid powder
LogP	4.572
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	12
Heavy Atom Count	34
Complexity	641
Defined Atom Stereocenter Count	0
InChi Key	CAILNONEKASNSH-UHFFFAOYSA-N
InChi Code	InChI=1S/C27H27FN2O4/c28-18-25(31)23(16-20-10-4-1-5-11-20)29-26(32)24(17-21-12-6-2-7-13-21)30-27(33)34-19-22-14-8-3-9-15-22/h1-15,23-24H,16-19H2,(H,29,32)(H,30,33)
Chemical Name	benzyl N-[1-[(4-fluoro-3-oxo-1-phenylbutan-2-yl)amino]-1-oxo-3-phenylpropan-2-yl]carbamate
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: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture and light.
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

References

[1]. Premature termination codon readthrough upregulates progranulin expression and improves lysosomal function in preclinical models of GRN deficiency. Mol Neurodegener. 2020 Mar 16;15(1):21. [2]. Cysteine cathepsins are central contributors of invasion by cultured adenosylmethionine decarboxylase-transformed rodent fibroblasts. Cancer Res. 2004 Dec 15;64(24):8831-8.

Solubility Data

Solubility (In Vitro)

DMSO : ~42.5 mg/mL (~91.89 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 1.7 mg/mL (3.68 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 17.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: 1.7 mg/mL (3.68 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 17.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Solubility in Formulation 3: ≥ 1.7 mg/mL (3.68 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 17.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.1621 mL	10.8106 mL	21.6212 mL
	5 mM	0.4324 mL	2.1621 mL	4.3242 mL
	10 mM	0.2162 mL	1.0811 mL	2.1621 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.