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139926-23-1 - 3-Ethoxythiophene-2-carboxylic acid, 97% - B20296 - Alfa Aesar

B20296 3-Ethoxythiophene-2-carboxylic acid, 97%

CAS Number

Size Price ($) Quantity Availability
1g 65.12
5g 323.42
25g 1306.00
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3-Ethoxythiophene-2-carboxylic acid, 97%


Chemical Properties

Formula Weight
Melting point


3-Ethoxythiophene-2-carboxylic acid is used as a pharmaceutical intermediate.


Store in cool, dry place in a well sealed container. Store away from oxidizing agents, bases, reducing agents.

Literature References

Visvanathan Ramanathan; Robert Levine. The Alkylation and Arylation of 2-Thienyllithium and the Reactions of 3-Methylthiophene with Organometallic Compounds. Journal of Organic Chemistry. 1962, 27 (5), 1667-1670.

Norman P. Gould; Ta-Jyh Lee. Dianions of methylated thiophene-2-carboxylic acids: their formation and reactivity. J. Org. Chem. 1980, 45 (22), 4528-4530.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Harmonized Tariff Code


  • B20586

    Methyl 3-methoxythiophene-2-carboxylate, 97%
  • B22129

    Methyl 3-hydroxythiophene-2-carboxylate, 97%
  • L10293

    Thiophene-2,5-dicarboxylic acid, 97%
  • L13588

    5-Acetylthiophene-2-carboxylic acid, 98+%

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