(3,4-Diaminothieno[2,3-b]thiophene-2,5-diyl)bis(phenylmethanone) CAS 3686-10-0
| CAS No. | 3686-10-0 |
| Molecular Formula | C20H14N2O2S2 |
| Molecular Weight | 378.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(3,4-Diaminothieno[2,3-b]thiophene-2,5-diyl)bis(phenylmethanone) (CAS 3686-10-0), molecular formula C20H14N2O2S2 and molecular weight 378.47 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, (3,4-Diaminothieno[2,3-b]thiophene-2,5-diyl)bis(phenylmethanone) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 378.47 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures (3,4-Diaminothieno[2,3-b]thiophene-2,5-diyl)bis(phenylmethanone) 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 | C20H14N2O2S2 |
| Molecular Weight | 378.47 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Diaminothieno Standards
Recommended Standards
- (2S,5S)-1-{2-[(2S,5S)-2,5-Diethylphospholan-1-yl]phenyl}-2,5-diethylphospholane1-oxide (CAS 2635339-89-6)
- 1-(6-(Tritylamino)pyridin-3-yl)ethan-1-one (CAS 49647-11-2)
- (2R,5R)-1-(2-[(2R,5R)-2,5-Diethyl-1-phospholanyl]phenyl)-2,5-diethylphospholane 1-oxide (CAS 924294-55-3)
- 1,1-Dimethylethyl 4-[5-[2-(4-aminophenyl)ethynyl]-2-pyridinyl]-1-piperazinecarboxylate (CAS 2308497-20-1)
- 2-((5-Phenyl-1H-1,2,4-triazol-3-yl)thio)acetic acid (CAS 58755-01-4)
- Ac-Cys-Oxytocin (CAS CATO-C4X-206626)
- [1-(difluoromethyl)cyclobutyl]methanol (CAS 1780499-30-0)
- 5-(((4-Bromothiophen-2-yl)methyl)amino)-3,3-dimethyl-5-oxopentanoic acid (CAS 1355849-31-8)
- (2S,3S,4R,5R)-2,4,5-Trihydroxy-3-(((2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)-6-(((2S,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal (CAS 69401-47-4)
- (6-Cyano-2-methylpyridin-3-yl)boronic acid (CAS 2225180-00-5)
- (3-(Hydroxymethyl)piperidin-1-yl)(pyrazin-2-yl)methanone (CAS 939985-99-6)
- 4-Methoxy-N-(pyridin-3-ylmethyl)butan-1-amine (CAS 1247569-42-1)
- 4-(Amino(cyano)methyl)benzonitrile (CAS 760130-79-8)
- D-Gln19-Tirzepatide (CAS CATO-CPTD788915)
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 18665070610 / Nicole.chen@cato-chem.com