Determine the necessary mass, volume, or concentration for preparing a solution.
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≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Protected from light,Room temperature,Desiccated Ships Normal Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Mechanism of photopolymerization of 3-thiophenecarboxylic acid catalyzed by potassium dichromate has been reported。
| Pubchem Sid | 488180205 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/488180205 |
| Canonical Smiles | C1=CSC=C1C(=O)O |
| IUPAC Name | thiophene-3-carboxylic acid |
| InChIKey | YNVOMSDITJMNET-UHFFFAOYSA-N |
| INCHI | 1S/C5H4O2S/c6-5(7)4-1-2-8-3-4/h1-3H,(H,6,7) |
| Isomeric SMILES | C1=CSC=C1C(=O)O |
| WGK Germany | 3 |
| RTECS | XM8330300 |
| PubChem CID | 6918 |
| Molecular Weight | 128.15 |
| Beilstein | 1994 |
| Reaxy-Rn | 1994 |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organoheterocyclic compounds |
| Class | Thiophenes |
| Subclass | Thiophene carboxylic acids and derivatives |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Thiophene carboxylic acids |
| Alternative Parents | Heteroaromatic compounds Monocarboxylic acids and derivatives Carboxylic acids Organooxygen compounds Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aromatic heteromonocyclic compounds |
| Substituents | Thiophene carboxylic acid - Heteroaromatic compound - Monocarboxylic acid or derivatives - Carboxylic acid - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Aromatic heteromonocyclic compound |
| Description | This compound belongs to the class of organic compounds known as thiophene carboxylic acids. These are compounds containing a thiophene ring which bears a carboxylic acid group. |
| External Descriptors | Not available |
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Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
| Certificate of Analysis | May 15, 2026 | T124563 | |
| Certificate of Analysis | May 15, 2026 | T124563 | |
| Certificate of Analysis | May 15, 2026 | T124563 | |
| Certificate of Analysis | May 15, 2026 | T124563 | |
| Certificate of Analysis | Sep 04, 2025 | T124563 | |
| Certificate of Analysis | Sep 04, 2025 | T124563 | |
| Certificate of Analysis | Aug 28, 2025 | T124563 | |
| Certificate of Analysis | Mar 21, 2024 | T124563 | |
| Certificate of Analysis | Mar 21, 2024 | T124563 | |
| Certificate of Analysis | Mar 21, 2024 | T124563 | |
| Certificate of Analysis | Mar 21, 2024 | T124563 | |
| Certificate of Analysis | Mar 21, 2024 | T124563 | |
| Certificate of Analysis | Oct 19, 2022 | T124563 | |
| Certificate of Analysis | Jul 24, 2022 | T124563 | |
| Certificate of Analysis | Jul 24, 2022 | T124563 | |
| Certificate of Analysis | Jul 24, 2022 | T124563 | |
| Certificate of Analysis | Jul 24, 2022 | T124563 |
| Solubility | Soluble in water at 20°C 4.3 g/L. |
|---|---|
| Melt Point(°C) | 136.0-141.0°C |
| Molecular Weight | 128.150 g/mol |
| XLogP3 | 1.500 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 1 |
| Exact Mass | 127.993 Da |
| Monoisotopic Mass | 127.993 Da |
| Topological Polar Surface Area | 65.500 Ų |
| Heavy Atom Count | 8 |
| Formal Charge | 0 |
| Complexity | 103.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
| 1. Jiankai Zhang, Huangzhong Yu. (2021) Reduced energy loss enabled by thiophene-based interlayers for high performance and stable perovskite solar cells. Journal of Materials Chemistry A, 9 (7): (4138-4149). [PMID:] [10.1039/D0TA10270A] |
| 2. Wendi Wang, Jianxin Wang, Danfeng He, Xin Huang, Yutong Yang, Xi Chen, Lijie Zhao, Hong Pan, Jun Zhang. (2025) Thiophene bridged Ni-V units in bimetallic hydroxides electrodes to improve the cycling stability of supercapacitor. JOURNAL OF ALLOYS AND COMPOUNDS, [PMID:] [10.1016/j.jallcom.2025.184957] |