2,5-Di(2-thienyl)thieno[3,2-b]thiophene CAS 21210-90-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21210-90-2 |
| Molecular Formula | C14H8S4 |
| Molecular Weight | 304.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2,5-Di(2-thienyl)thieno[3,2-b]thiophene (CAS 21210-90-2), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C14H8S4. Molecular weight: 304.47 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C14H8S4 |
| Molecular Weight | 304.47 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Sulfur Atoms | 4 |
Related Di Standards
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Recommended Standards
- 1a-Methylandrosterone (CAS 3398-67-2)
- 2a-Methyl-5a-androstan-3a-ol-17one (CAS 6961-54-2)
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- 2-{[(2-Chlorobenzyl)amino]carbonyl}benzoic acid (CAS 129478-20-2)
- 1-(4-(Dimethylamino)phenyl)-3-(p-tolyl)urea (CAS 847934-12-7)
- 1-2-3-Tri-O-benzyl-4-6-O-benzylidene-α-D-galactopyranoside (CAS 53929-36-5)
- 5-(2,6-Dichlorophenyl)oxazole (CAS 175211-71-9)
- 5-Bromo-7-methoxyindolin-2-one (CAS 1360886-58-3)
- 3-(1,1-Difluoroethyl)benzonitrile (CAS 55805-06-6)
- Peptide Impurity 13 (CAS CATO-CPTD788813)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com