4,4'-(1,4-Phenylenebis(ethyne-2,1-diyl))dianiline CAS 246141-52-6
| CAS No. | 246141-52-6 |
| Molecular Formula | C22H16N2 |
| Molecular Weight | 308.38 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 4,4'-(1,4-Phenylenebis(ethyne-2,1-diyl))dianiline (CAS 246141-52-6), a certified reference material (molecular formula C22H16N2, MW 308.38 g/mol) for analytical method development and quality control.
Structurally, 4,4'-(1,4-Phenylenebis(ethyne-2,1-diyl))dianiline (C22H16N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 308.38 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C22H16N2 |
| Molecular Weight | 308.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Phenylenebis Standards
- 3,3'-(1,4-Phenylenebis(dimethylsilanediyl))bis(propan-1-amine) (CAS 20152-18-5)
- 6,6'-(1,4-Phenylenebis(oxy))bis(hexan-1-ol) (CAS 154876-99-0)
- 4,4'-(1,3-Phenylenebis(oxy))dibenzonitrile (CAS 31206-12-9)
- 4,4'-(1,3-Phenylenebis(azanediyl))bis(4-oxobut-2-enoic acid) (CAS 36847-98-0)
- 4,4'-(1,4-Phenylenebis(azanediyl))bis(4-oxobut-2-enoic acid) (CAS 36847-99-1)
- 3,3'-(1,2-Phenylenebis(methylene))bis(5-methyldihydrofuran-2(3H)-one) (CAS 23189-60-8)
- 2,2′-[1,4-Phenylenebis(methylidynenitrilo)]bis[phenol] (CAS 13060-68-9)
- 2,2'-((1,4-Phenylenebis(azanylylidene))bis(methanylylidene))diphenol (CAS 5344-68-3)
Recommended Standards
- 3-Methyl-4-(4-methylpiperazin-1-yl)-6-phenylisoxazolo[5,4-b]pyridine (CAS 61658-71-7)
- 4,4'-Di(pyridin-4-yl)-1,1'-biphenyl (CAS 319430-87-0)
- 3,7,7-Trimethyl-4-(pyridin-4-yl)-2H,4H,5H,6H,7H,8H,9H-pyrazolo[3,4-b]quinolin-5-one (CAS 865658-71-5)
- 4,4'-Diphenyl-2,2'-bipyridine (CAS 6153-92-0)
- 1-(3-Chloro-2-hydroxypropyl)-3,5-bis(oxiranylmethyl)-1,3.5-triazine-2,4,6(1H,3H,5H)-trione (CAS 78627-42-6)
- 3-(1H-Imidazol-1-yl)pyridine (CAS 25700-15-6)
- Ethyl 2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetate (CAS 57079-04-6)
- 1a-Methyl-5a-androstan-3a,17b-diol (CAS 4349-94-4)
- 2-(4-Bromophenyl)-4,5-dihydrooxazole (CAS 189120-01-2)
- 1-(2-Ethoxyethoxy)-4-vinylbenzene (CAS 67521-18-0)
- 5-Bromo-2-((tert-butoxycarbonyl)amino)thiazole-4-carboxylic acid (CAS 914347-09-4)
- N-tert-Butyl-2-hydroxy-5-methylbenzamide (CAS 1019401-48-9)
- 5-(Thiophen-2-yl)-7-(trifluoromethyl)-[1,3]thiazolo[4,5-b]pyridin-2-amine (CAS 743453-27-2)
- Epidermal Growth Factor Receptor Peptide (985-996) (CAS 96249-43-3)
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