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VBY-825 is a novel, potent and reversible cathepsin inhibitor with high activity against cathepsins B, L, S and V. VBY-825 had no effect on body weight or IgG2b level, frequency of soft tissue tumors or intraosseous tumor area. VBY-825 decreased total and MOLA, consistent with inhibited resorption. There was also a trend of increased relative trabecular bone area. Serum TRACP 5b activity in the VBY-825 treated group did not differ from the respective vehicle group, whereas the number of osteoclasts at tumor-bone interface was increased in VBY-825 treated animals. These findings suggest that VBY-825 decreased osteoclast function and resorption activity without decreasing the number of osteoclasts In conclusion, VBY-825 had no effects on tumor growth but it inhibited bone destruction in this mouse model of MM, which is consistent with its potency on cathepsin S and K, which are known to be important in osteoclast-mediated bone resorption. VBY-825 is a promising candidate for the treatment of tumor-associated bone disease.
| References |
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| Molecular Formula |
C23H29F4N3O5S
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| Molecular Weight |
535.5521
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| Exact Mass |
535.176
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| CAS # |
1310340-58-9
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| Related CAS # |
(S,R,R)-VBY-825
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| PubChem CID |
70945511
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| Appearance |
White to off-white solid powder
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| LogP |
4.208
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| Hydrogen Bond Donor Count |
3
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| Hydrogen Bond Acceptor Count |
10
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| Rotatable Bond Count |
13
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| Heavy Atom Count |
36
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| Complexity |
908
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| Defined Atom Stereocenter Count |
3
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| SMILES |
CC[C@@H](C(=O)C(=O)NC1CC1)NC(=O)[C@H](CS(=O)(=O)CC2CC2)N[C@@H](C3=CC=C(C=C3)F)C(F)(F)F
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| InChi Key |
PPUXXDKQNAHHON-BJLQDIEVSA-N
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| InChi Code |
InChI=1S/C23H29F4N3O5S/c1-2-17(19(31)22(33)28-16-9-10-16)30-21(32)18(12-36(34,35)11-13-3-4-13)29-20(23(25,26)27)14-5-7-15(24)8-6-14/h5-8,13,16-18,20,29H,2-4,9-12H2,1H3,(H,28,33)(H,30,32)/t17-,18-,20-/m0/s1
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| Chemical Name |
(3S)-N-cyclopropyl-3-[[(2R)-3-(cyclopropylmethylsulfonyl)-2-[[(1S)-2,2,2-trifluoro-1-(4-fluorophenyl)ethyl]amino]propanoyl]amino]-2-oxopentanamide
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| HS Tariff Code |
2934.99.9001
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| 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)
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| Solubility (In Vitro) |
DMSO : ~125 mg/mL (~233.40 mM)
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| Solubility (In Vivo) |
Solubility in Formulation 1: ≥ 2.08 mg/mL (3.88 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 20.8 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: 2.08 mg/mL (3.88 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 20.8 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. View More
Solubility in Formulation 3: ≥ 2.08 mg/mL (3.88 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 1.8672 mL | 9.3362 mL | 18.6724 mL | |
| 5 mM | 0.3734 mL | 1.8672 mL | 3.7345 mL | |
| 10 mM | 0.1867 mL | 0.9336 mL | 1.8672 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.
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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