3,4-Dimethylthieno[2,3-b]thiophene CAS 175202-58-1
| CAS No. | 175202-58-1 |
| Molecular Formula | C8H8S2 |
| Molecular Weight | 168.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
3,4-Dimethylthieno[2,3-b]thiophene (CAS 175202-58-1) is a high-purity analytical reference standard with the molecular formula C8H8S2 and a molecular weight of 168.28 g/mol.
The molecular framework of 3,4-Dimethylthieno[2,3-b]thiophene (C8H8S2) is characterized by sulfur-containing functionality, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8S2 |
| Molecular Weight | 168.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Sulfur Atoms | 2 |
Related Dimethylthieno Standards
- 3,6-Dimethylthieno[3.2-b]thiophene (CAS 56412-11-4)
- 6,6-dimethylthieno[2,3-c]furan-4-one (CAS 1951483-73-0)
- 2,6-Dimethylthieno[3,2-d]pyrimidin-4-amine (CAS 1017789-22-8)
- 4,6-Dimethylthieno[2,3-b]pyridin-3(2H)-one (CAS 55023-32-0)
- 5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 18593-44-7)
- 5,6-dimethylthieno[2,3-d]pyrimidin-4-amine (CAS 4994-89-2)
- 5,6-Dimethylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione (CAS 35970-82-2)
- 3,4-Dimethylthieno[2,3-b]thiophene-2-carboxaldehyde (CAS 159709-36-1)
Recommended Standards
- 2-Isopropyl-2,4,5,5-tetramethyl-2,5-dihydro-1H-imidazole (CAS 171974-62-2)
- Undec-9-yn-1-ol (CAS 177961-61-4)
- 2,4-Diisopropyl-2-methyl-2,5-dihydro-1H-imidazole (CAS 171974-61-1)
- (1-cyclohexylazetidin-2-yl)methanamine (CAS 1782264-48-5)
- Tert-butyl (S)-(1-(diethylamino)-3-methyl-1-oxobutan-2-yl)carbamate (CAS 132393-08-9)
- Propyl Propylthiosulfonate (CAS 1113-13-9)
- 3-(Aminomethyl)-6-fluoropyridine (CAS 205744-17-8)
- (2-(Aminomethyl)-5-fluorophenyl)boronic acid (CAS 850689-32-6)
- 2-(2-Fluorophenyl)-2-(1H-pyrazol-1-yl)ethan-1-amine hydrochloride (CAS 2490698-02-5)
- 1-[(5-bromothiophen-2-yl)sulfonyl]piperazine (CAS 725688-07-3)
- (S)-2-Amino-3-cyano-4-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-4-carboxylic acid (CAS 2749963-99-1)
- Ethyl 2-amino-4,5-difluorobenzoate (CAS 864293-36-7)
- 2-Methoxy-N-(2-phenoxyethyl)ethan-1-amine (CAS 884497-53-4)
- Q-Peptide trifluoroacetate salt (CAS 1361235-89-3)
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