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THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID

Product Name
THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID
CAS No.
1723-27-9
Chemical Name
THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID
Synonyms
BTH-COOH;BUTTPARK 145\50-55;hieno[3,2-b]thiophene-5-carboxylicaci;thieno[3,2-b]thiophene-5-carboxylic acid;THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID;Thieno[3,2-b]thiophene-2-carboxylic acid 95+%;Thieno[3,2-b]thiophene-2-carboxylic Acid;THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID ISO 9001：2015 REACH
CBNumber
CB5686722
Molecular Formula
C7H4O2S2
Formula Weight
184.24
MOL File
1723-27-9.mol
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THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID Property

Melting point:
225-227
Boiling point:
386.7±22.0 °C(Predicted)
Density 
1.601±0.06 g/cm3(Predicted)
storage temp. 
2-8°C(protect from light)
form 
powder to crystal
pka
3.40±0.30(Predicted)
color 
White to Yellow to Green
InChI
InChI=1S/C7H4O2S2/c8-7(9)6-3-5-4(11-6)1-2-10-5/h1-3H,(H,8,9)
InChIKey
GVZXSZWCZGKLRS-UHFFFAOYSA-N
SMILES
C12C=CSC=1C=C(C(O)=O)S2
CAS DataBase Reference
1723-27-9(CAS DataBase Reference)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38-41
Safety Statements 
26-37/39-39
HazardClass 
IRRITANT
HS Code 
29349990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
CDS002700
Product name
Thieno[3,2-b]thiophene-2-carboxylic acid
Purity
Aldrich<SUP>CPR</SUP>
Packaging
100 mg
Price
$73.1
Updated
2025/07/31
TCI Chemical
Product number
T3156
Product name
Thieno[3,2-b]thiophene-2-carboxylic Acid
Purity
>98.0%(GC)(T)
Packaging
200mg
Price
$52
Updated
2025/07/31
TCI Chemical
Product number
T3156
Product name
Thieno[3,2-b]thiophene-2-carboxylic Acid
Purity
>98.0%(GC)(T)
Packaging
1g
Price
$205
Updated
2025/07/31
TRC
Product number
T345200
Product name
Thieno[3,2-b]thiophene-2-carboxylic Acid
Packaging
250mg
Price
$130
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
CHM0032383
Product name
THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID
Purity
95.00%
Packaging
2.5G
Price
$1147.43
Updated
2021/12/16
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THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID Chemical Properties,Usage,Production

Uses

Thieno[3,2-b]thiophene-2-carboxylic Acid has been used as a reactant for versatile α,ω-disubstituted tetratienoacene semiconductors for high performance organic thin-film transistors.

Definition

ChEBI: Thieno[3,2-b]thiophene-2-carboxylic acid is a thienothiophene.

Synthesis

201004-08-2

1723-27-9

Lithium hydroxide monohydrate (17.8 kg, 662.4 mol, 1.47 eq.) with deionized water (440.0 kg) was added to a 2000 L autoclave under a nitrogen atmosphere and stirred until completely dissolved. Subsequently, ethyl thieno[3,2-b]thiophene-2-carboxylate (95.5 kg, 449.8 mol, 1.0 eq.) was pumped into the reaction mixture at room temperature and tetrahydrofuran (379.5 kg) was added. The reaction mixture was heated to reflux (about 100°C) and maintained for 3 hours. Upon completion of the reaction, it was cooled to 35-40°C and the tetrahydrofuran was removed by rotary evaporation under reduced pressure under nitrogen atmosphere. Deionized water (200 kg) was added to the reaction vessel and the temperature was controlled to be below 20°C. The reaction mixture was filtered and the filter cake was washed three times with cold water (20 kg) and the residual liquid was removed by centrifugation to give the final thieno[3,2-b]thiophene-2-carboxylic acid (146 kg, 100% yield).

References

[1] Patent: CN103172646, 2016, B. Location in patent: Paragraph 0108-0110
[2] Macromolecules, 2013, vol. 46, # 6, p. 2078 - 2091
[3] Advanced Functional Materials, 2012, vol. 22, # 1, p. 48 - 60
[4] Journal of the Chemical Society - Perkin Transactions 1, 1997, # 22, p. 3465 - 3470
[5] New Journal of Chemistry, 2015, vol. 39, # 3, p. 2248 - 2255

THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID Preparation Products And Raw materials

Raw materials

Preparation Products

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THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID Suppliers

Belgium 1 China 104 Germany 2 India 5 Japan 1 Russia 2 United Kingdom 10 United States 14 Global 139
Hangzhou Oder Technology Co., Ltd.
Tel
0571-88772972-0 15057128248
Email
2746615063@qq.com
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China
ProdList
1106
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58
Zhengzhou TRIZ Pharmaceutical Technology Co., Ltd.
Tel
19943855286
Fax
0371-53392065
Email
triz-4@trizpharma.cn
Country
China
ProdList
1936
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56
Nanjing Dilu Pharmaceutical Co., Ltd
Tel
18014482516; 18014482516
Email
977144864@qq.com
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China
ProdList
419
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58
Zhengzhou HQ Material Co., Ltd.
Tel
0371-67759225 13526468238
Email
sale@hqmat.com
Country
China
ProdList
1256
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58
Shanghai Yaoke Biotechnology Co., Ltd
Tel
19943855286
Email
wangyangguang@trizpharma.cn
Country
China
ProdList
418
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58
J & K SCIENTIFIC LTD.
Tel
18210857532; 18210857532
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
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TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
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81
Wuhan Chemwish Technology Co., Ltd
Tel
86-027-67849912
Fax
86-027-87531808
Email
sales@chemwish.com
Country
China
ProdList
35896
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56
Shanghai Sinch Parmaceuticals Tech. Co. Ltd.
Tel
+86-21-54098501
Fax
+86-21-54096319
Email
sales@sinch.com.cn
Country
China
ProdList
11598
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64
Adamas Reagent, Ltd.
Tel
400-6009262 16621234537
Fax
021-64823266
Email
chenyj@titansci.com
Country
China
ProdList
14101
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View Lastest Price from THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID manufacturers

ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
Product
Thieno[3,2-b]thiophene-2-carboxylic acid 1723-27-9
Price
US $3.00-9.00/kg
Min. Order
1kg
Purity
99%min
Supply Ability
50kg
Release date
2025-07-28
Career Henan Chemical Co
Product
THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID 1723-27-9
Price
US $0.10/KG
Min. Order
1KG
Purity
95%-99%
Supply Ability
1kg; 50kg; 500kg
Release date
2019-12-24

1723-27-9, THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACIDRelated Search:

Thieno[3,2-b]thiophene-2-boronic Acid (contains varying amounts of Anhydride) Thieno[3,2-b]thiophene-2-carbonitrile thieno[3,2-b]thiophene-2-sulfonyl chloride Thieno[3,2-b]thiophene-2,5-dicarboxaldehyde Thiazole-5-carboxylic acid THIAZOLE-2-CARBOXYLIC ACID ETHYL THIAZOLE-4-CARBOXYLATE Thieno[3,2-b]thiophene thieno[3,2-b]thiophene-2,5-dicarboxylic acid Thieno[3,2-b]thiophene-3-sulfonyl chloride Thieno[3,2-c]pyridine-2-carboxylic acid methyl ester Thieno[3,2-b]thiophene-3-ol Thieno[3,2-b]thiophene-2-carboxaldehyde 1,3-Dihydrothiopheno[3,2-d]pyrimidine-2,4-dione Thieno[2,3-b]pyridine (8CI,9CI) THIENO[2,3-B]THIOPHENE-2-CARBOXYLIC ACID THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID METHYL THIENO[3,2-B!THIOPHENE-2-CARBOXYLATE, 97

  • BTH-COOH
  • THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID
  • BUTTPARK 145\50-55
  • thieno[3,2-b]thiophene-5-carboxylic acid
  • Thieno[3,2-<i>b</i>]thiophene-2-carboxylic Acid
  • Thieno[3,2-b]thiophene-2-carboxylic acid 95+%
  • THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID ISO 9001：2015 REACH
  • hieno[3,2-b]thiophene-5-carboxylicaci
  • 1723-27-9
  • Carboxylic Acids
  • Thiophenes & Benzothiophenes
  • Carboxylic Acids
  • Fused Ring Systems
  • Thiophenes & Benzothiophenes
  • BB16