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3-Hydroxythiophene-2-carboxylic acid

CAS No.
5118-07-0
Chemical Name:
3-Hydroxythiophene-2-carboxylic acid
Synonyms
3-Hydroxy-2-thiophenecarboxylic acid;3-Hydroxythiophene-2-carboxylic acid;2-Thiophenecarboxylic acid, 3-hydroxy-;2-(dihydroxymethylidene)-3-thiophenone;3-Hydroxythiophene-2-carboxylic acid 97%;2-Carboxy-3-hydroxythiophene, 3-Hydroxy-2-thenoic acid;3-Hydroxythiophene-2-carboxylic acid ISO 9001:2015 REACH
CBNumber:
CB9956788
Molecular Formula:
C5H4O3S
Molecular Weight:
144.15
MDL Number:
MFCD09414719
MOL File:
5118-07-0.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 05:22:43

3-Hydroxythiophene-2-carboxylic acid Properties

Melting point 108 °C(Solv: acetone (67-64-1))
Boiling point 326.4±27.0 °C(Predicted)
Density 1.603±0.06 g/cm3(Predicted)
storage temp. 2-8°C(protect from light)
form crystalline powder
pka 3.79±0.10(Predicted)
color Brown/grey

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P280-P301+P312-P302+P352-P305+P351+P338
Hazard Codes  Xi
HS Code  2934999090

3-Hydroxythiophene-2-carboxylic acid price More Price(41)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Apolloscientific OR2594 3-Hydroxythiophene-2-carboxylic acid 95% 5118-07-0 100mg $111 2026-06-04 Buy
Apolloscientific OR2594 3-Hydroxythiophene-2-carboxylic acid 95% 5118-07-0 250mg $160 2026-06-04 Buy
Apolloscientific OR2594 3-Hydroxythiophene-2-carboxylic acid 95% 5118-07-0 500mg $282 2026-06-04 Buy
Apolloscientific OR2594 3-Hydroxythiophene-2-carboxylic acid 95% 5118-07-0 1g $453 2026-06-04 Buy
Activate Scientific AS118502 3-Hydroxythiophene-2-carboxylic acid 97% 5118-07-0 1g $323 2026-06-04 Buy
Product number Packaging Price Buy
OR2594 100mg $111 Buy
OR2594 250mg $160 Buy
OR2594 500mg $282 Buy
OR2594 1g $453 Buy
AS118502 1g $323 Buy

3-Hydroxythiophene-2-carboxylic acid Chemical Properties, Uses, Production

Uses

3-Hydroxythiophene-2-carboxylic acid (cas# 5118-07-0) is a useful research chemical. This compound is useful because furoates and thenoates inhibit pyruvate dehydrogenase kinase 2 allosterically by binding to its pyruvate regulatory site.

Synthesis

3-(BENZYLOXY)-2-THIOPHENECARBOXYLIC ACID

186588-88-5

3-Hydroxythiophene-2-carboxylic acid

5118-07-0

General procedure for the synthesis of 3-hydroxythiophene-2-carboxylic acid from 3-benzyloxythiophene-2-carboxylic acid: a) 3-benzyloxythiophene-2-carboxylic acid (1.0 g) was hydrogenated with 10% palladium-carbon catalyst (1.8 g) in a mixture of ethanol (150 mL) and 2N hydrochloric acid (4.5 mL) for 2 hours at 45 psi hydrogen pressure. Upon completion of the reaction, the mixture was filtered through a layer of diatomaceous earth and the filtrate was concentrated under vacuum to afford 3-hydroxythiophene-2-carboxylic acid (600 mg, 98% yield) as an off-white solid product. The product was characterized by 1H NMR (300 MHz, CDCl3): δ 6.78 (d, 1H), 7.49 (d, 1H). Mass spectrometry (APCI) showed m/z=145 (M+1).LC/MS analysis showed a retention time of 1.15 min.

References

[1] Patent: WO2007/1225, 2007, A1. Location in patent: Page/Page column 16

3-Hydroxythiophene-2-carboxylic acid Preparation Products And Raw materials

3-Hydroxythiophene-2-carboxylic acid Suppliers

Global Suppliers ( 54)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Shanghai Ennopharm Co., Ltd. +86 (21) 6435-5022 China 4263 65
Shanghai Sunway Pharmaceutical Technology Co., Ltd 13761987713 hxzheng@sunwaypharm.cn China 8663 57
Nanjing Norris-Pharm Technology Co., Ltd 13901585132 sales@norris-pharm.com China 8869 55
Shanghai Hekang Biotechnology Co., Ltd. 17721021104 18939837085 2880152141@qq.com China 1840 55
Modachem Shanghai Co., Ltd +86 (0)21 51320687 51371369 1744605818 China 1576 58
ShangHai AmK Pharmaceutical Technology Co., Ltd. 微信 18019252918 18019252918 sale@amkchem.com China 14982 55
Shanghai Tombiopharma Chemical Co. Ltd. 13391076197 tombiopharma@163.com China 4986 55
Henan CoreyChem Co., Ltd 0371-86658258 info@coreychem.com China 10442 58
Amadis Chemical Company Limited 571-89925085 sales@amadischem.com China 131885 58

View Latest Price from 3-Hydroxythiophene-2-carboxylic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
3-Hydroxythiophene-2-carboxylic acid  pictures 2026-08-20 3-Hydroxythiophene-2-carboxylic acid
5118-07-0
$1.10 1g 99.00% 100 Tons Dideu Industries Group Limited
3-Hydroxythiophene-2-carboxylic acid pictures 2020-01-14 3-Hydroxythiophene-2-carboxylic acid
5118-07-0
$9.80 1g ≥99% 100kg Career Henan Chemical Co

3-Hydroxythiophene-2-carboxylic acid Spectrum

3-Hydroxythiophene-2-carboxylic acid 3-Hydroxy-2-thiophenecarboxylic acid 2-Carboxy-3-hydroxythiophene, 3-Hydroxy-2-thenoic acid 3-Hydroxythiophene-2-carboxylic acid 97% 2-(dihydroxymethylidene)-3-thiophenone 2-Thiophenecarboxylic acid, 3-hydroxy- 3-Hydroxythiophene-2-carboxylic acid ISO 9001:2015 REACH 5118-07-0 C5H4O3S Carboxylic Acids Thiophenes & Benzothiophenes Carboxylic Acids Thiophenes & Benzothiophenes