Boc-Asp(OME)-Fluoromethyl Keton is a broad caspase inhibitor that can suppress Fas-mediated phagocytosis and oxidative rupture inhibition, but does not affect the chemotactic activity of IL-8.

Physicochemical Properties

Molecular Formula	C11H18FNO5
Molecular Weight	263.26272
Exact Mass	263.116
CAS #	187389-53-3
PubChem CID	9881695
Appearance	Colorless to light yellow liquid
Density	1.1±0.1 g/cm3
Boiling Point	383.5±37.0 °C at 760 mmHg
Flash Point	185.7±26.5 °C
Vapour Pressure	0.0±0.9 mmHg at 25°C
Index of Refraction	1.440
LogP	1.91
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	8
Heavy Atom Count	18
Complexity	324
Defined Atom Stereocenter Count	1
SMILES	CC(C)(OC(N[C@H](C(CF)=O)CC(OC)=O)=O)C
InChi Key	MXOOUCRHWJYCAL-ZETCQYMHSA-N
InChi Code	InChI=1S/C11H18FNO5/c1-11(2,3)18-10(16)13-7(8(14)6-12)5-9(15)17-4/h7H,5-6H2,1-4H3,(H,13,16)/t7-/m0/s1
Chemical Name	methyl (3S)-5-fluoro-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-oxopentanoate
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, 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

Targets	Caspase
ln Vitro	Polymorphonuclear leukocytes treated with Boc-Asp(OME)-Fluoromethyl Keton (100 μM; 30 minutes) are protected against both Fas-induced and spontaneous apoptosis (−CH-11)[1]. LDH release is considerably increased by Boc-Asp(OME)-Fluoromethyl Keton (20 μM; 5 hours; J774.1/JA-4 cells)[2].
References	[1]. Stimulation of Fas signaling down-regulates activity of neutrophils from major trauma patients with SIRS. Immunobiology. 2011;216(3):334-342. [2]. Pan-caspase inhibitors induce necroptosis via ROS-mediated activation of mixed lineage kinase domain-like protein and p38 in classically activated macrophages. Exp Cell Res. 2019;380(2):171-179.

Solubility Data

Solubility (In Vitro)

DMSO : ≥ 100 mg/mL (379.85 mM)

Solubility (In Vivo)

Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *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. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	3.7985 mL	18.9926 mL	37.9853 mL
	5 mM	0.7597 mL	3.7985 mL	7.5971 mL
	10 mM	0.3799 mL	1.8993 mL	3.7985 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.