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Purity: ≥98%
Q203 is an imidazopyridine amide (IAP) compound that block Mycobacterium tuberculosis growth by targeting the respiratory cytochrome bc1 complex. It has the potential for the treatment of tuberculosis. Q203 inhibited the growth of MDR and XDR M. tuberculosis clinical isolates in culture broth medium in the low nanomolar range and was efficacious in a mouse model of tuberculosis at a dose less than 1 mg per kg body weight, which highlights the potency of Q203. Q203 is active against the reference strain Mycobacterium tuberculosis H37Rv with MIC50s of 2.7 nM in culture broth medium and 0.28 nM inside macrophages. In addition, Q203 displays pharmacokinetic and safety profiles compatible with once-daily dosing. Together, these data indicate that Q203 is a promising new clinical candidate for the treatment of tuberculosis.
| Targets |
Mycobacterium tuberculosis H37Rv( MIC50=2.7 nM )
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| ln Vitro |
Q203 is an imidazopyridine amide (IAP) compound that block Mycobacterium tuberculosis growth by targeting the respiratory cytochrome bc1 complex. It has the potential for the treatment of tuberculosis. Q203 inhibited the growth of MDR and XDR M. tuberculosis clinical isolates in culture broth medium in the low nanomolar range and was efficacious in a mouse model of tuberculosis at a dose less than 1 mg per kg body weight, which highlights the potency of Q203. Q203 is active against the reference strain Mycobacterium tuberculosis H37Rv with MIC50s of 2.7 nM in culture broth medium and 0.28 nM inside macrophages. In addition, Q203 displays pharmacokinetic and safety profiles compatible with once-daily dosing. Together, these data indicate that Q203 is a promising new clinical candidate for the treatment of tuberculosis.
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| ln Vivo |
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| Enzyme Assay |
Q203 is active against the reference strain Mycobacterium tuberculosis H37Rv with MIC50s of 2.7 nM in culture broth medium and 0.28 nM inside macrophages.
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| References |
| Molecular Formula |
C29H28CLF3N4O2
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|---|---|
| Molecular Weight |
557.01
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| Exact Mass |
556.19
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| Elemental Analysis |
C, 62.53; H, 5.07; Cl, 6.36; F, 10.23; N, 10.06; O, 5.74
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| CAS # |
1334719-95-7
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| Related CAS # |
1334719-95-7;1566517-83-6 (Ditosylate);
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| Appearance |
Solid powder
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| SMILES |
CCC1=C(N2C=C(C=CC2=N1)Cl)C(=O)NCC3=CC=C(C=C3)N4CCC(CC4)C5=CC=C(C=C5)OC(F)(F)F
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| InChi Key |
OJICYBSWSZGRFB-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C29H28ClF3N4O2/c1-2-25-27(37-18-22(30)7-12-26(37)35-25)28(38)34-17-19-3-8-23(9-4-19)36-15-13-21(14-16-36)20-5-10-24(11-6-20)39-29(31,32)33/h3-12,18,21H,2,13-17H2,1H3,(H,34,38)
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| Chemical Name |
6-chloro-2-ethyl-N-[[4-[4-[4-(trifluoromethoxy)phenyl]piperidin-1-yl]phenyl]methyl]imidazo[1,2-a]pyridine-3-carboxamide
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| Synonyms |
Q-203 free base; Q 203; Q203;
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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: ~20 mg/mL ( 35.9 mM)
Water: ~20 mg/mL |
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| Solubility (In Vivo) |
Solubility in Formulation 1: 2 mg/mL (3.59 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 sonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.0 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 2: (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 1.7953 mL | 8.9765 mL | 17.9530 mL | |
| 5 mM | 0.3591 mL | 1.7953 mL | 3.5906 mL | |
| 10 mM | 0.1795 mL | 0.8977 mL | 1.7953 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.
| NCT Number | Recruitment | interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
| NCT04847583 | Terminated | Drug: Q203 | COVID-19 Virus Infection | Qurient Co., Ltd. | July 29, 2021 | Phase 2 |
| NCT03563599 | Completed | Drug: Telacebec (Q203) | Treatment-naïve, Sputum Smear-positive Patients With Drug-sensitive Pulmonary TB | Qurient Co., Ltd. | July 23, 2018 | Phase 2 |
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