1,2-Bis(4-butylphenyl)ethyne CAS 80221-11-0
| CAS No. | 80221-11-0 |
| Molecular Formula | C22H26 |
| Molecular Weight | 290.44 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 1,2-Bis(4-butylphenyl)ethyne (CAS 80221-11-0), a certified reference material (molecular formula C22H26, MW 290.44 g/mol) for analytical method development and quality control.
Structurally, 1,2-Bis(4-butylphenyl)ethyne (C22H26) contains a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 290.44 g/mol, it falls into the medium-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 | C22H26 |
| Molecular Weight | 290.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
Related Bis Standards
- 8-(4-n-Butylphenyl)-8-oxooctanoic acid (CAS 951892-15-2)
- Ethyl 6-(4-butylphenyl)-6-oxohexanoate (CAS 951888-70-3)
- 898791-47-4 8-(4-tert-Butylphenyl)-8-oxooctanoic acid DTXSID70645427 (CAS 898791-47-4)
- 3-[(4-tert-Butylphenyl)methoxy]thiophene-2-carboxylic acid (CAS 344268-35-5)
- 2-(((4-Butylphenyl)amino)methyl)-4-chlorophenol (CAS 1040083-23-5)
- 1-[(4-tert-Butylphenyl)methyl]-1,2-dihydroquinolin-2-one (CAS 866155-79-5)
- 3-(4-Butylphenyl)-1-phenyl-1H-pyrazol-5-amine (CAS 956453-60-4)
- 3-(4-Tert-butylphenyl)-1-phenyl-1h-pyrazol-5-amine (CAS 312496-98-3)
Recommended Standards
- 1,1-Dibutyl-3-(4-isopropylphenyl)urea (CAS 86781-17-1)
- 13-Phenyltridecanoic acid (CAS 20913-07-9)
- 1-(4-Methoxyphenyl)dodecan-1-one (CAS 63829-20-9)
- 17β-Hydroxy-17α-methyl-5α-estran-3-one (CAS 6424-04-0)
- 4-(4-Chlorophenyl)sulfonylbenzohydrazide (CAS 20721-08-8)
- 4-(5-Phenyl-1,3,4-oxadiazol-2-yl)benzoic acid (CAS 85292-45-1)
- 2-Bromo-N-(2-cyclohex-1-en-1-ylethyl)butanamide (CAS 1119450-45-1)
- N,N'-((3aR,4S,7R,7aS)-5-(tert-butyl)-2,2-dimethyl-3a,4,7,7a-tetrahydrobenzo[d][1,3]dioxole-4,7-diyl)dibenzamide (CAS 1998128-24-7)
- 3-(3-(4-(Dimethylamino)phenyl)-2-oxoimidazolidin-1-yl)benzoic acid (CAS 651748-88-8)
- Ramelteon Impurity 50 (CAS CATO-C4X-262250)
- (R)-(-)-1-Indanol 697-64-3 MFCD00064164 R(-)-1-Hydroxyindan (CAS 697-64-3)
- 10-Phenyl-9-anthraceneboronic Acid (CAS 334658-75-2)
- n-Cyclohexyl-3-(2,5-dioxopyrrolidin-1-yl)propanamide (CAS 955291-13-1)
- Semaglutide impurity 258 (CAS CATO-C4X-2226258)
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