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4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid

4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid structure

CAS No.: 88-76-6

Chemical Name:: 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid

Synonyms: NSC26425;NSC 26425;556874_ALDRICH;EINECS 201-858-0;chloropyrazolicacid5;Benzenesulfonic acid, 4-chl;3-methyl-1-(2-chloro-5-sulfophenyl)-5-pyrazolone;1-(2'-Chloro-5'-sulfophenyl)-3-methyl-5-pyrazolone;1-(2'-Chloro-5'-sulphophenyl)-3-methyl-5-pyrazolone;1-(2-Chloro-5-sulfophenyl)-3-methyl-5(4H)-pyrazolone

CBNumber:: CB1366903

Molecular Formula:: C10H9ClN2O4S

Molecular Weight:: 288.71

MDL Number:: MFCD00020745

MOL File:: 88-76-6.mol

MSDS File:: SDS

Last updated:2026-08-28 09:47:29

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4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid Properties

Melting point	344 °C(lit.)
Density	1+-.0.1 g/cm3(Predicted)
storage temp.	Store at room temperature
pka	-0.96±0.50(Predicted)
Appearance	Off-white to light yellow Solid
CAS DataBase Reference	88-76-6(CAS DataBase Reference)
NIST Chemistry Reference	Benzenesulfonic acid, 4-chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)-(88-76-6)
EPA Substance Registry System	Benzenesulfonic acid, 4-chloro-3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)- (88-76-6)

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H317
Precautionary statements	P261-P272-P280-P302+P352-P333+P313-P321-P363-P501
Hazard Codes	Xi
Risk Statements	43
Safety Statements	36/37
WGK Germany	3
TSCA	TSCA listed

4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid price More Price(25)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	S607150	4-CHLORO-3-(3-METHYL-5-OXO-2-PYRAZOLIN-1-YL)-BENZENESULFONIC ACID Aldrich^CPR	88-76-6	1 unit	$32.7	2026-04-30	Buy
Sigma-Aldrich	S607150	4-CHLORO-3-(3-METHYL-5-OXO-2-PYRAZOLIN-1-YL)-BENZENESULFONIC ACID Aldrich	88-76-6	1g	$29.8	2024-03-01	Buy
Synthonix	C68922	4-Chloro-3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid >98%	88-76-6	5g	$78	2026-05-06	Buy
Synthonix	C68922	4-Chloro-3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid >98%	88-76-6	10g	$100	2026-05-06	Buy
Synthonix	C68922	4-Chloro-3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid >98%	88-76-6	25g	$150	2026-05-06	Buy

Product number	Packaging	Price	Buy
S607150	1 unit	$32.7	Buy
S607150	1g	$29.8	Buy
C68922	5g	$78	Buy
C68922	10g	$100	Buy
C68922	25g	$150	Buy

4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid Chemical Properties,Uses,Production

Uses

Used as intermediates used in the preparation of dyes and pigments.

4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid Preparation Products And Raw materials

Raw materials

Preparation Products

disodium 2-[[1-(2-chloro-5-sulphonatophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]naphthalene-1-sulphonate Acid yellow 34 C.I. Acid Yellow 131 Acid yellow 29 sodium 4-chloro-3-[4-[[2,2'-dimethyl-4'-[[4-[(phenylsulphonyl)oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate

4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid Suppliers

Global( 123)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
TCI (Shanghai) Development Co., Ltd.	021-67121386	Sales-CN@TCIchemicals.com	China	24512	81
Energy Chemical	400-0056266	sales8178@energy-chemical.com	China	44850	61
shanghai science Bio-Pharmceutical.co,ltd.	021-021-57872719 13761402923	245662540@qq.com	China	299	60
Shanghai Longsheng chemical Co.,Ltd.	58099637 13585536065	sales@shlschem.com	China	9880	59
Shanghai Hanhong Scientific Co.,Ltd.	021-54306202 13764082696	info@hanhongsci.com	China	42917	64
XiaoGan ShenYuan ChemPharm co,ltd	15527621225; 15527621225	1791901229@qq.com	China	6746	52
Sichuan Kulinan Technology Co., Ltd	400-1166-196 18981987031	cdhxsj@163.com	China	11674	57
Tianjin heowns Biochemical Technology Co., Ltd.	400 638 7771	sales@heowns.com	China	14412	57
T&W GROUP	021-61551611 13296011611	contact@trustwe.com	China	9884	58

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
TCI (Shanghai) Development Co., Ltd.	81
Energy Chemical	61
shanghai science Bio-Pharmceutical.co,ltd.	60
Shanghai Longsheng chemical Co.,Ltd.	59
Shanghai Hanhong Scientific Co.,Ltd.	64
XiaoGan ShenYuan ChemPharm co,ltd	52
Sichuan Kulinan Technology Co., Ltd	57
Tianjin heowns Biochemical Technology Co., Ltd.	57
T&W GROUP	58

View Lastest Price from 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2019-07-06	4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid 88-76-6	$1.00	1kg	98%min		Career Henan Chemical Co

4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid
88-76-6
$1.00
98%min
Career Henan Chemical Co

4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid Spectrum

4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid(88-76-6)MS 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid(88-76-6)¹HNMR 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid(88-76-6)¹³CNMR 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid(88-76-6)IR1 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid(88-76-6)IR2

88-76-6(4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid)Related Search:

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5-chloro-6-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)toluene-3-sulphonic acid 3-Methyl-2-pyrazolin-5-one Pyrazole

1of4

1-(2'-CHLORO-5'-SULFONGLPHENGL)-3-METHYL-5-PYRAZOLONE 1-(2-Chloro-5-sulfophenyl)-3-Methyl-5-pyrazolone (25CSMP) 556874_ALDRICH Benzenesulfonic acid, 4-chl Benzenesulfonic acid, 4-chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)- EINECS 201-858-0 NSC 26425 NSC26425 1-(2-Chloro-5-sulfophenyl)-3-methyl-2-pyrazolin-5-one 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid 1-(2-Chloro-5-sulfophenyl)-3-methyl-2-pyrazolin-5-one, 3-Methyl-1-(2-chloro-5-sulfophenyl)-5-pyrazolone 1-(2-Chloro-5-sulfophenyl)-3-methyl-5(4H)-pyrazolone 4-chloro-3-(3-methyl-5-oxo-4H-pyrazol-1-yl)benzenesulfonic acid 4-chloro-3-(5-keto-3-methyl-4H-pyrazol-1-yl)benzenesulfonic acid 3-methyl-1-(2-chloro-5-sulfophenyl)-5-pyrazolone 4-chloro-3-(4,5-dihydro-3-methyl-5-oxo-1h-pyrazol-1-yl)-benzenesulfonic acid 3-methyl-1-(2’-chloro-5’-sulfonicphenyl)-5-pyrazolone 4-chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulphonicacid 4-Chloro-3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid 4-chloro-3-(4,5-dihydro-3-methyl-5-oxo-1h-pyrazol-1-yl)-benzenesulfonicaci Benzenesulfonic acid, 4-chloro-3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)- chloropyrazolicacid5 4-chloro-3-(3-methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid 1-(2'-Chloro-5'-sulphophenyl)-3-methyl-5-pyrazolone 1-(2'-Chloro-5'-sulfophenyl)-3-methyl-5-pyrazolone> 3-methyl-1 -(2' -chloro-5 '-sulfonic phenyl) -5-pyrazolinone 4-chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulphonic... 1-(2'-Chloro-5'-sulfophenyl)-3-methyl-5-pyrazolone 1-(2-Chloro-5-sulfophenyl)-3-methyl-5-pyrazolone(25CSPMP) 88-76-6 C10H9ClN2O4S Building Blocks Halogenated Heterocycles Heterocyclic Building Blocks Pyrazoles Intermediates of Dyes and Pigments