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Chemical Structure| 81045-39-8 Chemical Structure| 81045-39-8

Structure of 81045-39-8

Chemical Structure| 81045-39-8

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Product Details of [ 81045-39-8 ]

CAS No. :81045-39-8
Formula : C9H5Br2N
M.W : 286.95
SMILES Code : BrC1=CC=C(Br)C2=C1C=NC=C2
MDL No. :MFCD03109888
InChI Key :KNBALCRXZUTMBP-UHFFFAOYSA-N
Pubchem ID :271281

Safety of [ 81045-39-8 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Computational Chemistry of [ 81045-39-8 ] Show Less

Physicochemical Properties

Num. heavy atoms 12
Num. arom. heavy atoms 10
Fraction Csp3 0.0
Num. rotatable bonds 0
Num. H-bond acceptors 1.0
Num. H-bond donors 0.0
Molar Refractivity 57.14
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

12.89 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

2.34
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

3.48
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

3.76
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

2.99
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

3.79
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

3.27

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-4.43
Solubility 0.0107 mg/ml ; 0.0000373 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Moderately soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-3.43
Solubility 0.106 mg/ml ; 0.000369 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-5.4
Solubility 0.00115 mg/ml ; 0.00000399 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Moderately soluble

Pharmacokinetics

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)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

Yes
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

Yes
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-5.58 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

1.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<0.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

1.61

Application In Synthesis of [ 81045-39-8 ]

* 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.

  • Downstream synthetic route of [ 81045-39-8 ]

[ 81045-39-8 ] Synthesis Path-Downstream   1~35

  • 3
  • [ 81045-39-8 ]
  • [ 81171-44-0 ]
  • [ 244250-20-2 ]
  • benzyl 5,8-dibromo-1,2-dihydro-2-[N-(p-nitrophenyl)sulfonyl-(S)-alanyl]isoquinolin-1-ylacetate [ No CAS ]
  • benzyl 5,8-dibromo-1,2-dihydro-2-[N-(p-nitrophenyl)sulfonyl-(S)-alanyl]isoquinolin-1-ylacetate [ No CAS ]
  • 4
  • [ 81045-39-8 ]
  • [ 24850-33-7 ]
  • [ 53701-47-6 ]
  • 1-allyl-5,8-dibromo-1,2-dihydro-2-[N-phthaloylalanyl]isoquinoline [ No CAS ]
  • 1-allyl-5,8-dibromo-1,2-dihydro-2-[N-phthaloylalanyl]isoquinoline [ No CAS ]
  • 5
  • [ 81045-39-8 ]
  • [ 111061-31-5 ]
  • [ 53701-47-6 ]
  • phenyl 5,8-dibromo-1,2-dihydro-2-[N-phthaloylalanyl]isoquinolin-1-ylacetate [ No CAS ]
  • phenyl 5,8-dibromo-1,2-dihydro-2-[N-phthaloylalanyl]isoquinolin-1-ylacetate [ No CAS ]
  • 6
  • [ 81045-39-8 ]
  • [ 81171-44-0 ]
  • [ 53701-47-6 ]
  • benzyl 5,8-dibromo-1,2-dihydro-2-[N-phthaloylalanyl]isoquinolin-1-ylacetate [ No CAS ]
  • benzyl 5,8-dibromo-1,2-dihydro-2-[N-phthaloylalanyl]isoquinolin-1-ylacetate [ No CAS ]
  • 7
  • [ 13735-81-4 ]
  • [ 81045-39-8 ]
  • [ 4306-25-6 ]
  • 5,8-dibromo-1,2-dihydro-1-phenacyl-2-[N-phthaloyl-(S)-alanyl]isoquinoline [ No CAS ]
  • 5,8-dibromo-1,2-dihydro-1-phenacyl-2-[N-phthaloyl-(S)-alanyl]isoquinoline [ No CAS ]
  • 8
  • [ 119-65-3 ]
  • [ 34784-04-8 ]
  • [ 63927-22-0 ]
  • [ 81045-39-8 ]
  • 9
  • [ 688-61-9 ]
  • [ 81045-39-8 ]
  • (1S,3S)-1,3-Diallyl-5,8-dibromo-1,2,3,4-tetrahydro-isoquinoline [ No CAS ]
  • 10
  • [ 81045-39-8 ]
  • [ 24850-33-7 ]
  • [ 4306-25-6 ]
  • [ 496910-19-1 ]
  • 2-[(S)-2-((S)-1-Allyl-5,8-dibromo-1H-isoquinolin-2-yl)-1-methyl-2-oxo-ethyl]-isoindole-1,3-dione [ No CAS ]
  • 11
  • [ 81045-39-8 ]
  • [ 24850-33-7 ]
  • [ 4306-25-6 ]
  • 1-(R)-allyl-5,8-dibromo-1,2-dihydro-2-[N-phthaloyl-(S)-alanyl]isoquinoline [ No CAS ]
  • 17
  • [ 81045-39-8 ]
  • [ 68263-23-0 ]
  • 18
  • [ 81045-39-8 ]
  • 1,2,3,4-tetrahydro-2-[methoxy(trifluoromethyl)phenylacetyl]-1-(2-phenethyl)isoquinoline [ No CAS ]
  • 19
  • [ 81045-39-8 ]
  • 1,2,3,4-tetrahydro-1-phenetyl-2-[N-phthaloyl-(S)-alanyl]isoquinoline [ No CAS ]
  • 20
  • [ 81045-39-8 ]
  • [ 68-12-2 ]
  • [ 943847-29-8 ]
  • [ 943847-30-1 ]
YieldReaction ConditionsOperation in experiment
To a stirred mixture of <strong>[81045-39-8]5,8-dibromoisoquinoline</strong> (4.0 g. 13.9 mmol) in tetrahydrofuran (120 mL) at -78 0C under nitrogen atmosphere was added dropwise a solution of rc-butyllithium (2.3 M in hexane, 7.3 mL, 16.8 mmol). The reaction mixture turned dark. After stirring for 15 minutes, the reaction mixture was quenched by adding lambdazetaiV-dimethylformamide (4.0 mL). After stirring at -78 0C for an additional 1 h, the reaction mixture was quenched with water, extracted with mixture of ethyl acetate/hexane (2:8), washed with water and brine, dried (Na2SO4), and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel using hexanes/ethyl acetate as eluent to afford the 8-bromo-5-isoquinolinecarboxaldehyde (0.10 g), followed by 5-bromo-8-isoquinoIinecarboxaldehyde (1.0 g) as white solids.1H NMR (CDCl3) of S-bromo-5-isoquinolinecarboxaldehyde: 10.36 (s, IH), 9.72 (s, IH), 9.00 (d, IH), 8.79 (d, IH), 8.04 (d, IH), 8.01 (dd, IH); and1H NMR (CDCl3) of S-bromo-S-isoquinolinecarboxaldehyde: 10.57 (s, IH), 10.41 (s, IH), * 8.81 (d, IH), 8.18 (d, IH), 8.11 (d, IH), 7.94 (d, IH).
  • 21
  • [ 81045-39-8 ]
  • [ 761446-44-0 ]
  • [ 1353970-23-6 ]
  • [ 1353970-21-4 ]
YieldReaction ConditionsOperation in experiment
With potassium phosphate tribasic trihydrate;bis-triphenylphosphine-palladium(II) chloride; In 1,2-dimethoxyethane; at 80℃; for 18h;Inert atmosphere; A suspension of 573 mg (2.0 mmol) <strong>[81045-39-8]5,8-dibromoisoquinoline</strong>, 458 mg (2.2 mmol) 1- methyM^^.S.S-tetramethyl-fl .S^ldioxaborolan^-y -I H-pyrazole, 849 mg (4.0 mmol) tri-potassium-phosphate trihydrate and 140 mg (0.20 mmol) bis- (triphenylphosphine)-palladium(ll)-chloride in 4 ml 1 ,2-dimethoxyethane were stirred for 18 hours at 80 C under nitrogen. The reaction mixture was cooled to room temperature, diluted with THF and filtered. The filtrate was evaporated and the residue was chromatographed on a silica gel column with ethylacetate/methanol as eluent. The two isomers were obtained separately.First eluted isomer: 8-bromo-5-(1-methyl-1 H-pyrazol-4-yl)-isoquinoline as colourless crystals; HPLC/MS 1.90 min, [M+H] = 288/290.Second eluted isomer: 5-bromo-8-(1-methyl-1 H-pyrazol-4-yl)-isoquinoline as yellow crystals; HPLC/MS (A) 2.02 min, [M+H] = 288/290.
With bis-triphenylphosphine-palladium(II) chloride; potassium phosphate tribasic trihydrate; In 1,2-dimethoxyethane; at 80℃; for 18h;Inert atmosphere; 1. A suspension of 573 mg (2.0 mmol) <strong>[81045-39-8]5,8-dibromoisoquinoline</strong>, 458 mg (2.2 mmol) 1-methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole, 849 mg (4.0 mmol) tri-potassium-phosphate trihydrate and 140 mg (0.20 mmol) bis-(triphenylphosphine)-palladium(II)-chloride in 4 ml 1,2-dimethoxyethane were stirred for 18 hours at 80 C. under nitrogen. The reaction mixture was cooled to room temperature, diluted with THF and filtered. The filtrate was evaporated and the residue was chromatographed on a silica gel column with ethylacetate/methanol as eluent. The two isomers were obtained separately.[0446]First eluted isomer: 8-bromo-5-(1-methyl-1H-pyrazol-4-yl)-isoquinoline as colourless crystals; HPLC/MS 1.90 min, [M+H]=288/290.[0447]Second eluted isomer: 5-bromo-8-(1-methyl-1H-pyrazol-4-yl)-isoquinoline as yellow crystals; HPLC/MS (A) 2.02 min, [M+H]=288/290.
  • 22
  • [ 81045-39-8 ]
  • [ 1323919-50-1 ]
  • [ 761446-44-0 ]
  • [ 1353967-97-1 ]
  • [ 1353968-20-3 ]
YieldReaction ConditionsOperation in experiment
A suspension of 573 mg (2.0 mmol) <strong>[81045-39-8]5,8-dibromoisoquinoline</strong>, 458 mg (2.2 mmol) 1- methyM^^.S.S-tetramethyl-fl .S^ldioxaborolan^-y -I H-pyrazole, 849 mg (4.0 mmol) tri-potassium-phosphate trihydrate and 140 mg (0.20 mmol) bis- (triphenylphosphine)-palladium(ll)-chloride in 4 ml 1 ,2-dimethoxyethane were stirred for 18 hours at 80 C under nitrogen. The reaction mixture was cooled to room temperature, diluted with THF and filtered. The filtrate was evaporated and the residue was chromatographed on a silica gel column with ethylacetate/methanol as eluent. The two isomers were obtained separately.First eluted isomer: 8-bromo-5-(1-methyl-1 H-pyrazol-4-yl)-isoquinoline as colourless crystals; HPLC/MS 1.90 min, [M+H] = 288/290.Second eluted isomer: 5-bromo-8-(1-methyl-1 H-pyrazol-4-yl)-isoquinoline as yellow crystals; HPLC/MS (A) 2.02 min, [M+H] = 288/290.; A suspension of 135 mg (0.47 mmol) 8-bromo-5-(1-methyl-1H-pyrazol-4-yl)- isoquinoline, 126 mg (0.47 mmol) 2-(2-fluoro-phenyl)-[1,8]naphthyridine-4-boronic acid and 47.4 mg (0.56 mmol) sodium hydrogen carbonate in 1.2 ml DMF and 0.6 ml water was heated to 80 C under nitrogen. Then 6.6 mg (0.009 mmol) bis- (triphenylphosphine)-palladium(ll)-chloride were added. The reaction mixture was stirred for 18 hours at 80 C. The reaction mixture was cooled to room temperature and partitioned between water and dichloromethane. The organic phase was dried over sodium sulfate and evaporated. The residue was chromatographed on a silica gel column with ethyl acetate/methanol as eluent yielding 2-(2-fluoro-phenyl)-4-[5- (1-methyl-1H-pyrazol-4-yl)-isoquinolin-8-yl]-[1,8]naphthyridine as colourless solid; HPLC/MS (A): 1.87 min, [M+H] 432.1H NMR (400 MHz, DMSO) delta = 9.19 (dd, J=4.1, 1.9, 1H), 8.83 (d, J=0.9, 1H), 8.60 (d, J=6.0, 1H), 8.27 (s, 1H), 8.23 (td, J=7.9, 1.8, 1H), 8.17 (dd, J=6.0, 0.9, 1H), 8.11 (d, J=2A, 1H), 7.95 (d, J=7.4, 1H), 7.91 (m, 2H), 7.80 (d, J=7A, 1H), 7.62 (m, 1H), 7.57 (dd, J=8.4, 4.1, 1H), 7.47 (td, J=7.6, 1.1, 1H), 7.41 (ddd, J=11.6, 8.3, 1.0, 1H), 4.01 (s, 3H). Similarly was prepared: 2-(2-Fluoro-phenyl)-4-[8-(1-methyl-1H-pyrazol-4-yl)- isoquinolin-5-yl]-[1,8]naphthyridine as yellow solid; HPLC/MS (A): 1.84 min, [M+H] 432.1H NMR (400 MHz, DMSO) delta = 9.66 (d, J=0.9, 1H), 9.18 (dd, J=4.1, 1.9, 1H), 8.45 (d, J=5.9, 1H), 8.33 (s, 1H), 8.22 (td, J=7.9, 1.8, 1H), 8.06 (d, J=2.3, 1H), 7.95 (d, J=0.8, 1H), 7.93 (d, J=7.4, 1H), 7.87 (dd, J=8.4, 1.9, 1H), 7.83 (d, J=7.4, 1H), 7.62 (dddd, J=8.2, 7.2, 5.1, 1.9, 1H), 7.56 (dd, J=8A, 4.1, 1H), 7.47 (td, J=7.6, 1.1, 1H), 7.41 (ddd, .7=11.7, 8.3, 1.0, 1H), 7.29 (dd, .7=5.9, 0.9, 1H), 4.02 (s, 3H).
  • 23
  • [ 119-65-3 ]
  • [ 81045-39-8 ]
YieldReaction ConditionsOperation in experiment
56% Isoquinoline ( 13a) (1.83 ml, 15.50 mmol) was added slowly to concentrated H2SO4 ( 17 ml) at 0C under stirring. The mixture was cooled at -25C and sodium borohydride (6.34 g, 35.65 mmol) was added at a rate such that the reaction temperature was maintained between -25C to -20C. The resulting reaction was continued for 1 hour at the said temperature and then allowed to reach at room temperature. The reaction mixture was poured into crushed ice and the pH was adjusted to 7.0 using concentrated aqueous N¾. The resulting slurry was stirred for 1 hour at 0C after which it was filtered and washed with ice-cold water. The crude product so obtained was air dried and purified by column chromatography to afford (2.5 g, 56%) 5,8-dibromoisoquinoline (13b). MS (EI) rn/z: 286 (M+l). ? NMR (400 MHz, DMSO-d6): 8 9.48 (s, 1H), 8.78 (d, J = 6 Hz, 1H), 8.06 (d, J = 8 Hz, 1H), 7.98 (dd, J = 6 Hz, J = 8 Hz, 2H).
  • 24
  • [ 81045-39-8 ]
  • [ 913558-64-2 ]
  • 25
  • [ 81045-39-8 ]
  • [ 1353436-09-5 ]
  • 26
  • [ 81045-39-8 ]
  • [ 1312759-04-8 ]
  • 27
  • [ 81045-39-8 ]
  • [ 569343-09-5 ]
  • [ 1312758-98-7 ]
  • 28
  • [ 81045-39-8 ]
  • [ 1353968-20-3 ]
  • 29
  • [ 81045-39-8 ]
  • [ 1622863-84-6 ]
  • 30
  • [ 81045-39-8 ]
  • [ 1622863-86-8 ]
  • 31
  • [ 81045-39-8 ]
  • [ 943847-32-3 ]
  • 32
  • [ 81045-39-8 ]
  • [ 943847-33-4 ]
  • 33
  • [ 81045-39-8 ]
  • C26H17Cl2F3N4O2 [ No CAS ]
  • 34
  • [ 81045-39-8 ]
  • 5-[5-(3,5-dichlorophenyl)-4,5-dihydro-5-(trifluoromethyl)-3-isoxazolyl]-N-(2-pyridinylmethyl)-8-isoquinolinecarboxamide [ No CAS ]
  • 35
  • [ 81045-39-8 ]
  • [ 1622863-98-2 ]
 

Historical Records

Technical Information

Categories

Related Functional Groups of
[ 81045-39-8 ]

Bromides

Chemical Structure| 34784-04-8

A195073 [34784-04-8]

5-Bromoisoquinoline

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A211560 [651310-24-6]

5-Bromo-4-methylisoquinoline

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A160132 [34784-05-9]

6-Bromoisoquinoline

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A104685 [1532-97-4]

4-Bromoisoquinoline

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4-Bromo-6-methylisoquinoline

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Related Parent Nucleus of
[ 81045-39-8 ]

Isoquinolines

Chemical Structure| 34784-04-8

A195073 [34784-04-8]

5-Bromoisoquinoline

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A211560 [651310-24-6]

5-Bromo-4-methylisoquinoline

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4-Bromoisoquinoline

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A104687 [1204298-52-1]

4-Bromo-6-methylisoquinoline

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