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LM10

Alias: LM10 LM 10 LM-10.
Cat No.:V24280 Purity: ≥98%
LM10 is a novel, potent and selective inhibitor of tryptophan 2,3-dioxygenase (TDO) with IC50 values of 0.62 and 2 μM for human and mouse TDO, respectively.
LM10
LM10 Chemical Structure CAS No.: 1316695-35-8
Product category: IDO
This product is for research use only, not for human use. We do not sell to patients.
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25mg
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Product Description

LM10 is a novel, potent and selective inhibitor of tryptophan 2,3-dioxygenase (TDO) with IC50 values of 0.62 and 2 μM for human and mouse TDO, respectively. LM10 exhibits selectivity for TDO ver IDO, MAO-A, MAO-B, and a panel of receptors and transporters. LM10 reduces growth of TDO-expressing P815 mastocytoma tumors in mice.

Biological Activity I Assay Protocols (From Reference)
ln Vivo
Oral LM10 (160 mg/kg) inhibits the development of P815 tumor cells that express TDO and enhances the rejection of the TDO-negative control clone P815B cl1 [1]. Good competitive inhibition characteristics and TDO inhibition (Ki = 5.6 μM) are demonstrated by LM10 [1]. LM10 exhibits no overt toxicity indicators, is highly soluble and bioavailable, and does not inhibit IDO [1]. After taking 160 mg/kg/day orally, plasma concentrations of LM10 varied between 20 and 40 μg/mL (87-175 μM). This is roughly 40 times greater than the IC50 found in cellular experiments employing physiological tryptophan plasma values [1].
Animal Protocol
Animal/Disease Models: DBA/2 mice (6-8 weeks) [1]
Doses: 160 mg/kg/day
Route of Administration: Oral
Experimental Results: Prevented the growth of TDO-expressing P815 tumor cells and promoted growth of control clone P815B cl1 Good exclusion, does not express TDO.
References

[1]. Reversal of tumoral immune resistance by inhibition of tryptophan 2,3-dioxygenase. Proc Natl Acad Sci U S A. 2012;109(7):2497-2502.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C11H8FN5
Molecular Weight
229.2131
Exact Mass
229.076
CAS #
1316695-35-8
PubChem CID
135743630
Appearance
Off-white to light yellow solid powder
Density
1.6±0.1 g/cm3
Boiling Point
522.5±60.0 °C at 760 mmHg
Flash Point
269.8±32.9 °C
Vapour Pressure
0.0±1.4 mmHg at 25°C
Index of Refraction
1.829
LogP
1.8
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
4
Rotatable Bond Count
2
Heavy Atom Count
17
Complexity
298
Defined Atom Stereocenter Count
0
SMILES
C1=CC2=C(C=C1F)NC=C2/C=C/C3=NNN=N3
InChi Key
JDBSZVDIUIRSDG-DAFODLJHSA-N
InChi Code
InChI=1S/C11H8FN5/c12-8-2-3-9-7(6-13-10(9)5-8)1-4-11-14-16-17-15-11/h1-6,13H,(H,14,15,16,17)/b4-1+
Chemical Name
6-fluoro-3-[(E)-2-(1H-1,2,3,4-tetrazol-5-yl)ethenyl]-1H-indole
Synonyms
LM10 LM 10 LM-10.
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

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO : ~50 mg/mL (~218.14 mM)
H2O : < 0.1 mg/mL
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (10.91 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 (10.91 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.

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Solubility in Formulation 3: 16.67 mg/mL (72.73 mM) in 50% PEG300 50% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.


Solubility in Formulation 4: 16 mg/mL (69.80 mM) in 0.5% CMC-Na/saline water (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 4.3628 mL 21.8141 mL 43.6281 mL
5 mM 0.8726 mL 4.3628 mL 8.7256 mL
10 mM 0.4363 mL 2.1814 mL 4.3628 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.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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