Structure of 76982-23-5
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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Batch number can be found on the product's label following the word 'Batch'.
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CAS No. : | 76982-23-5 |
Formula : | C8H5BrN2 |
M.W : | 209.04 |
SMILES Code : | BrC1=C2N=CC=NC2=CC=C1 |
MDL No. : | MFCD02181615 |
InChI Key : | UJEGBESUCWOWNQ-UHFFFAOYSA-N |
Pubchem ID : | 610437 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 11 |
Num. arom. heavy atoms | 10 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 47.24 |
TPSA ? Topological Polar Surface Area: Calculated from |
25.78 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.94 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.66 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.39 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.61 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.65 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.25 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.48 |
Solubility | 0.0685 mg/ml ; 0.000328 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.85 |
Solubility | 0.293 mg/ml ; 0.0014 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-4.19 |
Solubility | 0.0136 mg/ml ; 0.0000652 mol/l |
Class? Solubility class: Log S scale |
Moderately soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
Yes |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-5.69 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
0.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
0.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.69 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With bromine In acetonitrile for 2.5 h; Reflux; Inert atmosphere | General procedure: Bromine was added dropwise to a magnetically stirred refluxing solution of quinoxaline (1) or tetrahydroquinoxaline 15 or 19 in the relevant solvent. The resulting reaction mixture was heated at reflux temperature. The reaction was monitored by TLC or 1H NMR spectroscopy. After the desired time, the resulting reaction mixture was allowed to cool to room temperature and the solvent was removed under reduced pressure. The mixture was diluted with a saturated solution of sodium carbonate (10mL) and the mixture was extracted with ethyl acetate (2×25mL). Combined organic layers were washed with water, dried over Na2SO4 and concentrated. The crude was purified appropriate method described in below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | With bromine In tetrachloromethane for 45 h; Reflux; Inert atmosphere | General procedure: Bromine was added dropwise to a magnetically stirred refluxing solution of quinoxaline (1) or tetrahydroquinoxaline 15 or 19 in the relevant solvent. The resulting reaction mixture was heated at reflux temperature. The reaction was monitored by TLC or 1H NMR spectroscopy. After the desired time, the resulting reaction mixture was allowed to cool to room temperature and the solvent was removed under reduced pressure. The mixture was diluted with a saturated solution of sodium carbonate (10mL) and the mixture was extracted with ethyl acetate (2×25mL). Combined organic layers were washed with water, dried over Na2SO4 and concentrated. The crude was purified appropriate method described in below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
14 g | Stage #1: With hydrogenchloride In water at 0℃; for 0.5 h; Stage #2: With copper(I) bromide In water at 20℃; for 6 h; |
Add 17 g of 5-aminobenzopyrazine to 50 ml of water, cool to 0°C, add 25 ml of concentrated hydrochloric acid, stir for 0.5 hour, add 10 g of copper bromide in portions, stir at room temperature for 6 hours, add water, extract and separate , Drying, concentration, the residue was separated on a silica gel column to obtain 14g 5-bromobenzopyrazine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
53% | With bromine In tetrachloromethane for 0.75 h; Reflux; Irradiation; Inert atmosphere | General procedure: A solution of quinoxaline (1) or tetrahydroquinoxaline 15 or 19 in CCl4 (10mL) was irradiated with a 500-W lamp in a 25-mL flask equipped with a reflux condenser. Bromine was added dropwise to the refluxing solution and the solution was irradiated at reflux temperature. The reaction was monitored by TLC or 1H NMR spectroscopy. The resulting reaction mixture was allowed to warm to room temperature and diluted with a saturated solution of sodium carbonate (10mL). The mixture was extracted with methylene chloride (2×25mL) and the combined organic layers were washed with water, dried over Na2SO4 and concentrated. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
43% | With bromine In tetrachloromethane for 0.75 h; Reflux; Irradiation; Inert atmosphere | General procedure: A solution of quinoxaline (1) or tetrahydroquinoxaline 15 or 19 in CCl4 (10mL) was irradiated with a 500-W lamp in a 25-mL flask equipped with a reflux condenser. Bromine was added dropwise to the refluxing solution and the solution was irradiated at reflux temperature. The reaction was monitored by TLC or 1H NMR spectroscopy. The resulting reaction mixture was allowed to warm to room temperature and diluted with a saturated solution of sodium carbonate (10mL). The mixture was extracted with methylene chloride (2×25mL) and the combined organic layers were washed with water, dried over Na2SO4 and concentrated. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
35% | With bromine In acetonitrile for 2.5 h; Reflux; Inert atmosphere | General procedure: Bromine was added dropwise to a magnetically stirred refluxing solution of quinoxaline (1) or tetrahydroquinoxaline 15 or 19 in the relevant solvent. The resulting reaction mixture was heated at reflux temperature. The reaction was monitored by TLC or 1H NMR spectroscopy. After the desired time, the resulting reaction mixture was allowed to cool to room temperature and the solvent was removed under reduced pressure. The mixture was diluted with a saturated solution of sodium carbonate (10mL) and the mixture was extracted with ethyl acetate (2×25mL). Combined organic layers were washed with water, dried over Na2SO4 and concentrated. The crude was purified appropriate method described in below. |