ChemicalBook >> CAS DataBase List >>4-Bromo-1(2H)-isoquinolone

4-Bromo-1(2H)-isoquinolone

4-Bromo-1(2H)-isoquinolone structure

CAS No.: 3951-95-9

Chemical Name:: 4-Bromo-1(2H)-isoquinolone

Synonyms: 4-Bromoisoquinolin-1-ol;4-broMoisoquinolin-1(2H)-one;4-BROMO-2H-ISOQUINOLIN-1-ONE;4-bromoisocarbostyril;4-Bromo-1(2H)-isoquinolone;4-Bromo-1(2H)-isoquinolinone;4-BROMO-1-HYDROXYISOQUINOLINE;1(2H)-Isoquinolinone, 4-bromo-;4-Bromo-1(2H)-isoquinolone;4-bromo-1,2-dihydroisoquinolin-1-one

CBNumber:: CB4757050

Molecular Formula:: C9H6BrNO

Molecular Weight:: 224.05

MDL Number:: MFCD08437036

MOL File:: 3951-95-9.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-09-12 18:52:57

Request For Quotation

4-Bromo-1(2H)-isoquinolone Properties

Melting point	248-249 °C (decomp)(Solv: acetic acid (64-19-7); water (7732-18-5))
Boiling point	408.0±45.0 °C(Predicted)
Density	1.666±0.06 g/cm3(Predicted)
storage temp.	Sealed in dry,Room Temperature
form	solid
pka	11.91±0.40(Predicted)
Appearance	White to light brown Solid
InChI	1S/C9H6BrNO/c10-8-5-11-9(12)7-4-2-1-3-6(7)8/h1-5H,(H,11,12)
InChIKey	ZOPUFLIYIMVOGZ-UHFFFAOYSA-N
SMILES	BrC1=CNC(=O)c2ccccc12
UNSPSC Code	12352200
NACRES	NA.21

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H319
Precautionary statements	P305+P351+P338
Hazard Codes	Xi
Risk Statements	36
Safety Statements	26
WGK Germany	3
HS Code	2933499090
Storage Class	11 - Combustible Solids
Hazard Classifications	Eye Irrit. 2

4-Bromo-1(2H)-isoquinolone price More Price(68)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	SYX00211	4-Bromo-1(2H)-isoquinolone Aldrich	3951-95-9	1g	$529	2026-04-30	Buy
Usbiological	266247	4-Bromo-1-hydroxyisoquinoline Asreported	3951-95-9	50mg	$346	2026-06-03	Buy
Usbiological	266247	4-Bromo-1-hydroxyisoquinoline Asreported	3951-95-9	100mg	$476	2026-06-03	Buy
Usbiological	266247	4-Bromo-1-hydroxyisoquinoline Asreported	3951-95-9	250mg	$573	2026-06-03	Buy
Usbiological	266247	4-Bromo-1-hydroxyisoquinoline Asreported	3951-95-9	500mg	$758	2026-06-03	Buy

Product number	Packaging	Price	Buy
SYX00211	1g	$529	Buy
266247	50mg	$346	Buy
266247	100mg	$476	Buy
266247	250mg	$573	Buy
266247	500mg	$758	Buy

4-Bromo-1(2H)-isoquinolone Chemical Properties, Uses, Production

Synthesis

491-30-5

3951-95-9

General procedure for the synthesis of 4-bromo-1(2H)-isoquinolinone from 1-hydroxyisoquinoline: N-bromosuccinimide (NBS, 142 mg, 0.796 mmol) was added to a solution of DMF (2 mL) containing isoquinolin-1(2H)-one (105 mg, 0.723 mmol). The reaction mixture was stirred at room temperature for 2 hours. After completion of the reaction, the mixture was concentrated to remove the solvent. The crude product was purified by preparative high performance liquid chromatography (HPLC) to afford the intermediate 6 4-bromoisoquinolin-1(2H)-one (110 mg, 68% yield). [C] MS (ESI) m/z: 223.9 (M + H)+. 1H NMR (500 MHz, DMSO-d6) δ 11.57 (br.s, 1H), 8.24 (dd, J = 8.0, 0.8 Hz, 1H), 7.88-7.83 (m, 1H), 7.79-7.75 (m, 1H), 7.61 (ddd, J = 8.0, 7.1, 1.1 Hz, 1H), 7.55 (s, 1H).

References

[1] Journal of Medicinal Chemistry, 2014, vol. 57, # 4, p. 1299 - 1322
[2] Angewandte Chemie - International Edition, 2011, vol. 50, # 36, p. 8416 - 8419
[3] Synthetic Communications, 2007, vol. 37, # 23, p. 4199 - 4208
[4] Patent: US2014/206686, 2014, A1. Location in patent: Paragraph 0497-0499
[5] Patent: WO2016/69976, 2016, A1. Location in patent: Page/Page column 91

4-Bromo-1(2H)-isoquinolone Preparation Products And Raw materials

Raw materials

Isocarbostyril N-Bromosuccinimide N,N-Dimethylformamide

Preparation Products

4-AMino-1,2-dihydroisoquinolin-1-one hydrochloride 1-Chloroisoquinoline-4-carboxaldehyde

4-Bromo-1(2H)-isoquinolone Suppliers

Global Suppliers ( 138)

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Accela ChemBio Co.,Ltd.	021-50795510 4000665055	marketing@accelachem.com	China	10972	64
ZEROSCHEM.CO.,LTD.	10-61256048 13810278579;	sales@zeroschem.com	China	1399	59
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696	info@hanhongsci.com	China	42917	64
Chemsky（shanghai）International Co.,Ltd.	021-50135380	shchemsky@sina.com	China	32273	50
Record Tech (Shanghai) Co., LTD	13761627472	183009664@qq.com	China	660	62
Shanghai Sunway Pharmaceutical Technology Co., Ltd	13761987713	hxzheng@sunwaypharm.cn	China	8663	57
Shanghai yirong biology science and technology co., ltd	18049974220	3060526242@qq.com	China	999	60
Wuhan Haizheng Industry & Trade Development Co. Ltd	027-8866 0053/88660577/88660578		China	1070	55
Shanghai Topbiochem Technology Co., Ltd	021-58170097	info@topbiochem.com	China	9510	58

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
Accela ChemBio Co.,Ltd.	64
ZEROSCHEM.CO.,LTD.	59
Shanghai Hanhong Scientific Co.,Ltd.	64
Chemsky（shanghai）International Co.,Ltd.	50
Record Tech (Shanghai) Co., LTD	62
Shanghai Sunway Pharmaceutical Technology Co., Ltd	57
Shanghai yirong biology science and technology co., ltd	60
Wuhan Haizheng Industry & Trade Development Co. Ltd	55
Shanghai Topbiochem Technology Co., Ltd	58

View Latest Price from 4-Bromo-1(2H)-isoquinolone manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2026-08-20	4-BROMO-1(2H)-ISOQUINOLONE 3951-95-9	$1.10	1g	99.00%	100 Tons	Dideu Industries Group Limited
	2020-01-13	4-BROMO-1(2H)-ISOQUINOLONE 3951-95-9	$6.68	1KG	97%-99%	1kg-1000kg	Career Henan Chemical Co

4-BROMO-1(2H)-ISOQUINOLONE
3951-95-9
$1.10
99.00%
Dideu Industries Group Limited

4-BROMO-1(2H)-ISOQUINOLONE
3951-95-9
$6.68
97%-99%
Career Henan Chemical Co

4-Bromo-1(2H)-isoquinolone Spectrum

4-BROMO-1(2H)-ISOQUINOLONE(3951-95-9)¹HNMR

3951-95-9 (4-Bromo-1(2H)-isoquinolone) Related Search:

4-broMo-2-(trifluoroMethyl)pyriMidine 4-bromo-1,5-dimethyl-1H-pyrazole 3-(4-Bromo-pyrazol-1-ylmethyl)-pyridine 4-Bromo-6,7-dimethoxyquinoline 4-Bromo-1-methoxyisoquinoline

7-Bromo-1(2H)-isoquinolone 4-Bromo-1(2H)-isoquinolone 4-bromo-2-methyl-isoquinolin-1-one Isocarbostyril 2-Hydroxy-5-bromopyridine

4-Bromoisoquinoline

1of3

4-BROMO-1-HYDROXYISOQUINOLINE 4-bromoisocarbostyril 4-Bromo-1(2H)-isoquinolinone 4-Bromoisoquinolin-1-ol, 4-Bromoisoquinolin-1(2H)-one 4-bromo-1,2-dihydroisoquinolin-1-one 1(2H)-Isoquinolinone, 4-bromo- 4-BROMO-1(2H)-ISOQUINOLONE ISO 9001：2015 REACH 4-Bromo-1(2H)-isoquinolone 4-BROMO-2H-ISOQUINOLIN-1-ONE 4-Bromoisoquinolin-1-ol 4-broMoisoquinolin-1(2H)-one 4-Bromo-1(2H)-isoquinolone 3951-95-9 Building Blocks Isoquinoline organic building block