4,4'-(Pentane-1,5-diylbis(oxy))dianiline CAS 2391-56-2
| CAS No. | 2391-56-2 |
| Molecular Formula | C17H22N2O2 |
| Molecular Weight | 286.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4,4'-(Pentane-1,5-diylbis(oxy))dianiline (CAS 2391-56-2), a certified reference material (molecular formula C17H22N2O2, MW 286.37 g/mol) for analytical method development and quality control.
4,4'-(Pentane-1,5-diylbis(oxy))dianiline (C17H22N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C17H22N2O2 |
| Molecular Weight | 286.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related Pentane Standards
- Pentane-1,5-diyl bis(3-chloropropanoate) (CAS 50343-50-5)
- 4,4'-(Pentane-1,5-diylbis(oxy))diphenol (CAS 16146-59-1)
- (2's)-Pentane-1,5-diyldi-l-proline (CAS 1820575-05-0)
- Pentane-1,5-disulfonyl dichloride (CAS 62371-29-3)
- 4,4'-(Pentane-1,5-diylbis(oxy))dibenzonitrile (CAS 7467-71-2)
- 4,4'-(Pentane-1,5-diylbis(oxy))dibenzaldehyde (CAS 77355-01-2)
- Pentane-1,2-diyl dimethanesulfonate (CAS 2007920-95-6)
- ((Pentane-1,5-diylbis(oxy))bis(4,1-phenylene))dimethanamine (CAS 224054-40-4)
Recommended Standards
- 4-(Adamantan-1-yl)-N-methyl-2-nitroaniline (CAS 924841-80-5)
- 4-ethenyl-α,α-diphenyl-Benzenemethanol (CAS 3139-86-4)
- 4-(3-Hydroxy-5-phenylpentyl)-2-methoxyphenol (CAS 402469-45-8)
- 4-Methyl-5,6-diphenyl-1,3-dihydroisobenzofuran (CAS 61051-08-9)
- 3,5-Dichloro-4-fluoromandelic acid (CAS 1806317-31-6)
- (R)-1-(1-isopropyl-1H-benzo[d]imidazol-2-yl)ethan-1-amine (CAS 1398507-70-4)
- Estradiol Impurity 10 (CAS 71764-18-6)
- 4-Hydroxydiphenylamine (CAS 122-37-2)
- 3-Pentafluoroethylsulfanyl-propionitrile (CAS 1286743-79-0)
- 1-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-2,2,2-trifluoroethan-1-one (CAS 2231675-30-0)
- Methyl 4-chloro-3-hydroxybenzo[b]thiophene-2-carboxylate (CAS 2090969-20-1)
- 1,2-Dihydro-6-oxa-cyclopenta[cd]phenalene-5,7-dione 5699-00-3 (CAS 5699-00-3)
- (trans,trans)-1-Ethoxy-4-[[4′-ethyl[1,1′-bicyclohexyl]-4-yl]methoxy]-2,3-difluorobenzene (CAS 875468-55-6)
- Tirzepatide Impurity 33 (CAS CATO-C4X-324033)
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