Ac-YVAD-AFC is a fluorescent peptide substrate of caspase-1 with an excitation wavelength of 400 nm and an emission wavelength of 505 nm.

Physicochemical Properties

Molecular Formula	C33H36F3N5O10
Molecular Weight	719.6617
Exact Mass	719.241
CAS #	219137-85-6
PubChem CID	16760708
Appearance	White to off-white solid powder
Density	1.4±0.1 g/cm3
Boiling Point	1084.6±65.0 °C at 760 mmHg
Flash Point	609.8±34.3 °C
Vapour Pressure	0.0±0.3 mmHg at 25°C
Index of Refraction	1.586
LogP	3.1
Hydrogen Bond Donor Count	7
Hydrogen Bond Acceptor Count	13
Rotatable Bond Count	14
Heavy Atom Count	51
Complexity	1360
Defined Atom Stereocenter Count	4
SMILES	C[C@@H](C(=O)N[C@@H](CC(=O)O)C(=O)NC1=CC2=C(C=C1)C(=CC(=O)O2)C(F)(F)F)NC(=O)[C@H](C(C)C)NC(=O)[C@H](CC3=CC=C(C=C3)O)NC(=O)C
InChi Key	GWKJISJKNKIJNP-DEQDFGQZSA-N
InChi Code	InChI=1S/C33H36F3N5O10/c1-15(2)28(41-31(49)23(38-17(4)42)11-18-5-8-20(43)9-6-18)32(50)37-16(3)29(47)40-24(14-26(44)45)30(48)39-19-7-10-21-22(33(34,35)36)13-27(46)51-25(21)12-19/h5-10,12-13,15-16,23-24,28,43H,11,14H2,1-4H3,(H,37,50)(H,38,42)(H,39,48)(H,40,47)(H,41,49)(H,44,45)/t16-,23-,24-,28-/m0/s1
Chemical Name	(3S)-3-[[(2S)-2-[[(2S)-2-[[(2S)-2-acetamido-3-(4-hydroxyphenyl)propanoyl]amino]-3-methylbutanoyl]amino]propanoyl]amino]-4-oxo-4-[[2-oxo-4-(trifluoromethyl)chromen-7-yl]amino]butanoic acid
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]. TNF-α Induces Caspase-1 Activation Independently of Simultaneously Induced NLRP3 in 3T3-L1 Cells. J Cell Physiol. 2016 Dec;231(12):2761-7. [2]. Protective effects of anti-C5a in sepsis-induced thymocyte apoptosis. J Clin Invest. 2000 Nov;106(10):1271-80.

Additional Infomation

Ac-Tyr-Val-Ala-Asp-7-amino-4-trifluoromethylcoumarin is a tetrapeptide obtained by formal condensation of the C-terminal carboxy group of Ac-Tyr-Val-Ala-Asp with the amino group of 7-amino-4-trifluoromethylcoumarin. It has a role as a protease inhibitor. It is a tetrapeptide, a member of acetamides, a member of coumarins and an organofluorine compound. It is functionally related to a 7-amino-4-(trifluoromethyl)coumarin.

Solubility Data

Solubility (In Vitro)

DMSO : ~100 mg/mL (~138.95 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (3.47 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 25.0 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: ≥ 2.5 mg/mL (3.47 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in 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 25.0 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: ≥ 2.5 mg/mL (3.47 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 25.0 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	1.3895 mL	6.9477 mL	13.8955 mL
	5 mM	0.2779 mL	1.3895 mL	2.7791 mL
	10 mM	0.1390 mL	0.6948 mL	1.3895 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.