Dithieno[2,3-b:3,2-d]thiophene CAS 236-63-5
| CAS No. | 236-63-5 |
| Molecular Formula | C8H4S3 |
| Molecular Weight | 196.31 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.
CATO supplies Dithieno[2,3-b:3,2-d]thiophene (CAS 236-63-5), a certified reference material (molecular formula C8H4S3, MW 196.31 g/mol) for analytical method development and quality control.
Owing to sulfur-containing functionality, an aromatic ring system, Dithieno[2,3-b:3,2-d]thiophene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 196.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C8H4S3 |
| Molecular Weight | 196.31 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 3 |
Related Dithieno Standards
- Dithieno[2,3-b:2',3'-d]thiophene (CAS 236-65-7)
- 3593-75-7 Dithieno[3,2-b:2 inverted exclamation marka,3 inverted exclamation marka-d]thiophene (CAS 3593-75-7)
- 2H-Dithieno[3,2-e:2′,3′-g]benzotriazole10,13-dithia-3,4,5-triazatetracyclo[10.3.0.0²,⁶.0⁷,¹¹]pentadeca-1(12),2,5,7(11),8,14-hexaene (CAS 1415761-30-6)
- Dithieno[3,2-c:2’,3’-e]oxepine-4,6-dione (CAS 1043023-52-4)
- Dithieno[3,2-b:2',3'-d]thiophene-2,6-dicarboxaldehyde (CAS 67061-73-8)
- Dithieno[3,2-b:2',3'-d]thiophene-2,6-dicarboxylic acid (CAS 502764-53-6)
Recommended Standards
- methyl[(2-methyl-4,5,6,7-tetrahydro-1,3-benzothiazol-4-yl)methyl]amine (CAS 77528-58-6)
- Benzyl(2-ethoxyethyl)sulfane (CAS 64080-56-4)
- N-(Cyclohexylmethyl)-2-aminothiazole (CAS 69212-70-0)
- 5-Propyl-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-amine (CAS 91617-60-6)
- n-(Cyanomethyl)-3-phenylpropanamide (CAS 129977-03-3)
- 6-Bromo-2-hydroxynicotinic Acid (CAS 1805506-21-1)
- (5-Chloro-1,3,4-thiadiazol-2-yl)methanol (CAS 912669-58-0)
- D-Tyrosine, 2-iodo- (CAS 1241675-93-3)
- 1-(Octahydro-pyrrolo[3,4-b]azepin-7-yl)-ethanone (CAS 1316220-00-4)
- 8-Methylchromane (CAS 3722-72-3)
- Methyl 4-(cyanomethyl)-1H-imidazole-5-carboxylate (CAS 56039-06-6)
- 3,4-dimethylpyrrolidin-2-one (CAS 39585-10-9)
- 11-(((9H-fluoren-9-yl)methoxy)carbonylamino)undecanoic acid 88574-07-6 Fmoc-11-aminoundecanoic acid (CAS 88574-07-6)
- Des-[Gly]31-Semaglutide (CAS CATO-C4X-2226156)
Why CATO?
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