Dimethylthiophene-3,4-dicarboxylic acid CAS 99595-92-3
| CAS No. | 99595-92-3 |
| Molecular Formula | C8H8O4S |
| Molecular Weight | 200.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Dimethylthiophene-3,4-dicarboxylic acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Dimethylthiophene-3,4-dicarboxylic acid (CAS 99595-92-3), molecular formula C8H8O4S and molecular weight 200.21 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Dimethylthiophene-3,4-dicarboxylic acid (C8H8O4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 200.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Dimethylthiophene-3,4-dicarboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8O4S |
| Molecular Weight | 200.21 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Sulfur Atoms | 1 |
Related Dimethylthiophene Standards
- 3,4-Dimethylthiophene-2,5-dicarboxylic acid (CAS 19799-13-4)
- 4,5-Dimethylthiophene-2-sulfonamide (CAS 140646-53-3)
- 2,5-Dimethylthiophene-3-sulfonamide (CAS 140646-60-2)
- 3,5-dimethylthiophene-2-sulfonamide (CAS 1519966-29-0)
- 2,4-Dimethylthiophene-3-sulfonamide (CAS 208775-25-1)
- N,5-dimethylthiophene-2-sulfonamide (CAS 61714-51-0)
- 3,4-Dimethylthiophene-2-sulfonyl chloride (CAS 1227608-07-2)
- 3,5-dimethylthiophene-2-sulfonyl chloride (CAS 1314938-98-1)
Recommended Standards
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