Size | Price | Stock | Qty |
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5mg |
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10mg |
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50mg |
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Other Sizes |
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Targets |
α2-adrenergic receptor
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ln Vitro |
B16F10 cell viability, proliferation, and mitochondrial function are all decreased by ST91 [2].
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ln Vivo |
Rats treated intrathecally with ST91 exhibit antinociceptive effects [1].
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References |
[1]. Graham BA, et, al. Synergistic interactions between two alpha(2)-adrenoceptor agonists, dexmedetomidine and ST-91, in two substrains of Sprague-Dawley rats. Pain. 2000 Mar;85(1-2):135-43.
[2]. Maccari S, et, al. α-Adrenoceptor stimulation attenuates melanoma growth in mice. Br J Pharmacol. 2022 Apr;179(7):1371-1383. [3]. Stone LS, et, al. ST91 [2-(2,6-diethylphenylamino)-2-imidazoline hydrochloride]-mediated spinal antinociception and synergy with opioids persists in the absence of functional alpha-2A- or alpha-2C-adrenergic receptors. J Pharmacol Exp Ther. 2007 Dec;323(3):899-906. |
Additional Infomation |
See also: St 91 (annotation moved to).
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Molecular Formula |
C13H20CLN3
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Molecular Weight |
253.77
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Exact Mass |
253.135
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CAS # |
4749-61-5
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PubChem CID |
185944
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Appearance |
Typically exists as solid at room temperature
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Boiling Point |
325.1ºC at 760 mmHg
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Flash Point |
150.4ºC
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LogP |
2.821
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Hydrogen Bond Donor Count |
3
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Hydrogen Bond Acceptor Count |
1
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Rotatable Bond Count |
4
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Heavy Atom Count |
17
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Complexity |
238
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Defined Atom Stereocenter Count |
0
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SMILES |
CCC1=C(NC2NCCN=2)C(CC)=CC=C1.Cl
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InChi Key |
ZLRWFGBEDNTMEU-UHFFFAOYSA-N
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InChi Code |
InChI=1S/C13H19N3.ClH/c1-3-10-6-5-7-11(4-2)12(10)16-13-14-8-9-15-13;/h5-7H,3-4,8-9H2,1-2H3,(H2,14,15,16);1H
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Chemical Name |
N-(2,6-diethylphenyl)-4,5-dihydro-1H-imidazol-2-amine;hydrochloride
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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 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)
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Solubility (In Vitro) |
DMSO: 125 mg/mL (492.57 mM)
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Solubility (In Vivo) |
Solubility in Formulation 1: ≥ 2.08 mg/mL (8.20 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 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. Solubility in Formulation 2: ≥ 2.08 mg/mL (8.20 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 20.8 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 | 3.9406 mL | 19.7029 mL | 39.4058 mL | |
5 mM | 0.7881 mL | 3.9406 mL | 7.8812 mL | |
10 mM | 0.3941 mL | 1.9703 mL | 3.9406 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.