ChemicalBook >> CAS DataBase List >>4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid structure

CAS No.: 7712-05-2

Chemical Name:: 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid

Synonyms: 4H,6H-thieno[2,3-c]thiophene-2-carboxylic acid;4,6-Dihydro-thieno<3,4-b>thiophen-2-carbonsaeure;4,6-dihydrothieno[2,3-c]thiophene-2-carboxylic acid;4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid;4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylicAcid>Thieno[3,4-b]thiophene-2-carboxylic acid, 4,6-dihydro-;4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid 96%;4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic Acid

CBNumber:: CB42546496

Molecular Formula:: C7H6O2S2

Molecular Weight:: 186.25

MDL Number:: MFCD20642620

MOL File:: 7712-05-2.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-28 02:37:08

Product description	Number	Pack Size	Price
4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic Acid >98.0%(GC)(T)	D4071	1g	$732
4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid ≥98%(GC)	44233	1G	$983.07
4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid	093793	1.00g	$66
4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid	093793	5.00g	$202
4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid	093793	10.00g	$377
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4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Properties

Melting point	240°C(lit.)
Boiling point	419.0±45.0 °C(Predicted)
Density	1.551
storage temp.	2-8°C(protect from light)
form	powder to crystal
pka	3.56±0.20(Predicted)
color	Light orange to Yellow to Green
InChI	InChI=1S/C7H6O2S2/c8-7(9)5-1-4-2-10-3-6(4)11-5/h1H,2-3H2,(H,8,9)
InChIKey	RBINIIIGSUWMLQ-UHFFFAOYSA-N
SMILES	C12CSCC=1C=C(C(O)=O)S2

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H315-H319

Precautionary statements

P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313

HS Code

2934999090

NFPA 704

	0
1		0

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid price More Price(72)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
TCI Chemical	D4071	4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic Acid >98.0%(GC)(T)	7712-05-2	1g	$732	2024-03-01	Buy
Chem-Impex	44233	4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid ≥98%(GC)	7712-05-2	1G	$983.07	2026-05-19	Buy
Matrix Scientific	093793	4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid	7712-05-2	1.00g	$66	2026-05-18	Buy
Matrix Scientific	093793	4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid	7712-05-2	5.00g	$202	2026-05-18	Buy
Matrix Scientific	093793	4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid	7712-05-2	10.00g	$377	2026-05-18	Buy

Product number	Packaging	Price	Buy
D4071	1g	$732	Buy
44233	1G	$983.07	Buy
093793	1.00g	$66	Buy
093793	5.00g	$202	Buy
093793	10.00g	$377	Buy

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Chemical Properties,Uses,Production

Uses

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid can be used as organic synthesis intermediates and pharmaceutical intermediates, mainly used in laboratory research and development processes and pharmaceutical and chemical production processes.

Synthesis

Compound 3 was dissolved in ethanol,Potassium hydroxide was added and refluxed at 78 ° C for 4 h,After cooling to room temperature (25 ° C), the reaction solution was extracted with IM HCl, extracted with ethyl acetate, dried over Mg2SO4 and dried to give the title compound 4 (92%).

References

[1] Patent: CN106317070, 2017, A. Location in patent: Paragraph 0127

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid synthesis

Synthesis of 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid from Methyl 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylate

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Preparation Products And Raw materials

Raw materials

AKOS B019308 Methyl 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylate METHYL THIOPHENE-2-CARBOXYLATE

Preparation Products

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Suppliers

Global( 86)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Suzhou Victorypharm Co.,Ltd.	+86-13916956214	sales@victory-pharm.com	China	1299	58
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD	+86-13017695106 +86-13676922317	jiuyitime@fdachem.com	China	16512	58
AB PharmaTech,LLC	323-480-4688	sales@acrospharmatech.com	United States	989	55
Yunbio Tech Co.,Ltd.	+86-010-60605551 +86-18046518538	yunbiochem@126.com	China	321	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49979	58
SHANGHAI T&W PHARMACEUTICAL CO., LTD.	+86-021-61551413 +8618813727289	contact@trustwe.com	China	5742	58
Career Henan Chemica Co	+86-0371-86658258 +8613203830695	laboratory@coreychem.com	China	30225	58
SUZHOU SENFEIDA CHEMICAL CO.,LTD	+86-0512-83500002 +8618662433356	3899766280@qq.com	China	26362	58
HANGZHOU LEAP CHEM CO., LTD.	+86-571-87711850	market18@leapchem.com	China	43333	58

Supplier	Advantage
Suzhou Victorypharm Co.,Ltd.	58
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD	58
AB PharmaTech,LLC	55
Yunbio Tech Co.,Ltd.	58
Alchem Pharmtech,Inc.	58
CONIER CHEM AND PHARMA LIMITED	58
SHANGHAI T&W PHARMACEUTICAL CO., LTD.	58
Career Henan Chemica Co	58
SUZHOU SENFEIDA CHEMICAL CO.,LTD	58
HANGZHOU LEAP CHEM CO., LTD.	58

View Lastest Price from 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2026-04-17	4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic Acid 7712-05-2	$1.10-9.90	1kg	99%min	100kg	ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic Acid
7712-05-2
$1.10-9.90
99%min
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid Spectrum

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid(7712-05-2)¹HNMR

7712-05-2(4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid)Related Search:

TETRABROMO-THIENO[3,2-B]THIOPHENE

4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid 96% 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic acid 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylic Acid 4,6-dihydrothieno[2,3-c]thiophene-2-carboxylic acid 4,6-Dihydrothieno[3,4-b]thiophene-2-carboxylicAcid> Thieno[3,4-b]thiophene-2-carboxylic acid, 4,6-dihydro- 4,6-Dihydro-thieno<3,4-b>thiophen-2-carbonsaeure 4H,6H-thieno[2,3-c]thiophene-2-carboxylic acid 7712-05-2