4-Hydroxy-2-thiophenecarboxylic acid

Modify Date: 2025-09-22 08:42:06

4-Hydroxy-2-thiophenecarboxylic acid Structure
4-Hydroxy-2-thiophenecarboxylic acid structure
Common Name 4-Hydroxy-2-thiophenecarboxylic acid
CAS Number 40748-90-1 Molecular Weight 144.148
Density 1.6±0.1 g/cm3 Boiling Point 381.0±27.0 °C at 760 mmHg
Molecular Formula C5H4O3S Melting Point N/A
MSDS N/A Flash Point 184.2±23.7 °C

 Names

Name 4-hydroxythiophene-2-carboxylic acid
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.6±0.1 g/cm3
Boiling Point 381.0±27.0 °C at 760 mmHg
Molecular Formula C5H4O3S
Molecular Weight 144.148
Flash Point 184.2±23.7 °C
Exact Mass 143.988113
PSA 85.77000
LogP 1.18
Vapour Pressure 0.0±0.9 mmHg at 25°C
Index of Refraction 1.667

 Safety Information

HS Code 2934999090

 Synthetic Route

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4-Hydroxy-2-thiophenecarboxylic acid Structure

4-Hydroxy-2-thi...

CAS#:40748-90-1

Literature: Fiesselmann; Pfeiffer Chemische Berichte, 1954 , vol. 87, p. 848,855

~%

4-Hydroxy-2-thiophenecarboxylic acid Structure

4-Hydroxy-2-thi...

CAS#:40748-90-1

Literature: Fiesselmann; Boehm Chemische Berichte, 1956 , vol. 89, p. 1902,1904

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

2-Thiophenecarboxylic acid,4-hydroxy
4-Hydroxy-thiophen-2-carbonsaeure
3-Hydroxy-5-hydroxycarbonyl-thiophen
2-Thiophenecarboxylic acid, 4-hydroxy-
4-Hydroxy-2-thiophenecarboxylic acid
4-hydroxy-2-thenoic acid
4-hydroxy-thiophene-2-carboxylic acid
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