ChemicalBook >> CAS DataBase List >>4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID structure

CAS No.: 56671-28-4

Chemical Name:: 4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID

Synonyms: AKOS BBS-00000134;BUTTPARK 29\08-32;IFLAB-BB F1901-0074;4 5 6 7-TETRAHYDRO-4-OXOBENZOFURAN-3- &;4,5,6,7-Tetrahydro-4-oxobenzofuran-3-caroxylic acid;4,5,6,7-tetrahydro-4-oxo-3-benzofurancarboxylicacid;4-OXO-4,5,6,7-TETRAHYDROCOUMARONE-3-CARBOXYLIC ACID;4-oxo-6,7-dihydro-5H-1-benzofuran-3-carboxylic acid;4,5,6,7-Tetrahydro-4-oxobenzofuran-3-carboxylic acid;4-OXO-4,5,6,7-TETRAHYDROBENZOFURAN-3-CARBOXYLIC ACID

CBNumber:: CB0752330

Molecular Formula:: C9H8O4

Molecular Weight:: 180.16

MDL Number:: MFCD00052170

MOL File:: 56671-28-4.mol

MSDS File:: SDS

Last updated:2026-01-13 11:10:29

Product description	Number	Pack Size	Price
4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid	046887	500.00mg	$118
4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid	046887	1.00g	$151
4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid	046887	5.00g	$346
4-Oxo-4,5,6,7-tetrahydrobenzofuran-3-carboxylic acid 95+%	CD11103210	1g	$140
4-Oxo-4,5,6,7-tetrahydrobenzofuran-3-carboxylic acid 95+%	CD11103210	5g	$350
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4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID Properties

Melting point	140 °C
Boiling point	383.5±42.0 °C(Predicted)
Density	1.406±0.06 g/cm3(Predicted)
storage temp.	2-8°C
pka	3.74±0.20(Predicted)
Appearance	Off-white to yellow Solid
CAS DataBase Reference	56671-28-4

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS05
Signal word	Danger
Hazard statements	H314-H318
Precautionary statements	P280-P305+P351+P338-P310
Hazard Codes	C
Risk Statements	36/37/38
Safety Statements	26-36/37/39
Hazard Note	Corrosive
HazardClass	IRRITANT
HS Code	2932990090

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID price More Price(24)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Matrix Scientific	046887	4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid	56671-28-4	500.00mg	$118	2026-05-18	Buy
Matrix Scientific	046887	4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid	56671-28-4	1.00g	$151	2026-05-18	Buy
Matrix Scientific	046887	4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid	56671-28-4	5.00g	$346	2026-05-18	Buy
Crysdot	CD11103210	4-Oxo-4,5,6,7-tetrahydrobenzofuran-3-carboxylic acid 95+%	56671-28-4	1g	$140	2026-05-20	Buy
Crysdot	CD11103210	4-Oxo-4,5,6,7-tetrahydrobenzofuran-3-carboxylic acid 95+%	56671-28-4	5g	$350	2026-05-20	Buy

Product number	Packaging	Price	Buy
046887	500.00mg	$118	Buy
046887	1.00g	$151	Buy
046887	5.00g	$346	Buy
CD11103210	1g	$140	Buy
CD11103210	5g	$350	Buy

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID Chemical Properties,Uses,Production

Chemical Properties

White needle crystals. Melting point 141℃.

Uses

4-Oxo-4,5,6,7-tetrahydrobenzo[b]furan-3-carboxylic acid can be used as an intermediate of Propala.

Definition

ChEBI: 4-oxo-4,5,6,7-tetrahydrobenzo[b]furan-3-carboxylic acid is a member of benzofurans.

Synthesis

The methanol solution of resorcinol and potassium hydroxide is used to react with hydrogen under the action of active nickel to generate potassium 3-ketocyclohex-1-enolate, which is then cyclized with ethyl bromopyruvate under alkaline conditions , and then acidified to obtain 4-oxo-4,5,6,7-tetrahydrobenzo[b]furan-3-carboxylic acid.

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID Preparation Products And Raw materials

Raw materials

Methanol solution Ethyl bromopyruvate Resorcinol

Preparation Products

4-HYDROXYBENZOFURAN-3-CARBOXYLIC ACID

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID Suppliers

Global( 69)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29816	58
Zhejiang ZETian Fine Chemicals Co. LTD	+8618957127338	stella@zetchem.com	China	2994	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49979	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20124	58
Nanjing Bicbiotechnology Co., Ltd	+86-2552131256 +86-18251840740	sales@bicbiotech.com	China	5994	58
SHANGHAI KEAN TECHNOLOGY CO., LTD.	+8613817748580	cooperation@kean-chem.com	China	40066	58
Chongqing Chemdad Co., Ltd	+86-023-6139-8061 +86-86-13650506873	sales@chemdad.com	China	39927	58
Amadis Chemical Company Limited	571-89925085	sales@amadischem.com	China	131957	58
Chemwill Asia Co.,Ltd.	86-21-51086038	chemwill_asia@126.com	CHINA	23912	58

Supplier	Advantage
career henan chemical co	58
Zhejiang ZETian Fine Chemicals Co. LTD	58
Alchem Pharmtech,Inc.	58
CONIER CHEM AND PHARMA LIMITED	58
Henan Fengda Chemical Co., Ltd	58
Nanjing Bicbiotechnology Co., Ltd	58
SHANGHAI KEAN TECHNOLOGY CO., LTD.	58
Chongqing Chemdad Co., Ltd	58
Amadis Chemical Company Limited	58
Chemwill Asia Co.,Ltd.	58

View Lastest Price from 4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2019-07-06	4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID 56671-28-4	US $1.00 / KG	1KG	98%	200KG	Career Henan Chemical Co

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID
56671-28-4
US $1.00 / KG
98%
Career Henan Chemical Co

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID Spectrum

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID(56671-28-4)¹HNMR

56671-28-4(4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID)Related Search:

METHYL 4-OXO-4,5,6,7-TETRAHYDRO-1-BENZOFURAN-3-CARBOXYLATE 6,6-DIMETHYL-4-OXO-4,5,6,7-TETRAHYDRO-1-BENZOFURAN-3-CARBOXYLIC ACID ETHYL 2,5,5-TRIMETHYL-7-OXO-3,4,5,6-TETRAHYDRO-3-OXAINDENECARBOXYLATE 4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID 2-methyl-4-oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid

4,5,6,7-tetrahydro-4-oxo-3-benzofurancarboxylicacid 4,5,6,7-Tetrahydro-4-oxobenzofuran-3-caroxylic acid 4-OXO-4,5,6,7-TETRAHYDRO-1-BENZOFURAN-3-CARBOXYLIC ACID 4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID 4-OXO-4,5,6,7-TETRAHYDROBENZOFURAN-3-CARBOXYLIC ACID 4-OXO-4,5,6,7-TETRAHYDROCOUMARONE-3-CARBOXYLIC ACID AKOS BBS-00000134 IFLAB-BB F1901-0074 BUTTPARK 29\08-32 4 5 6 7-TETRAHYDRO-4-OXOBENZOFURAN-3- & 4,5,6,7-Tetrahydro-4-oxobenzofuran-3-carboxylic acid 3-Benzofurancarboxylicacid, 4,5,6,7-tetrahydro-4-oxo- 4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid, 3-Carboxy-4-oxo-4,5,6,7-tetrahydrobenzo[b]furan 4-oxo-6,7-dihydro-5H-1-benzofuran-3-carboxylic acid 56671-28-4