(E)-1-butyl-2-((4-nitrobenzylidene)amino)-4,5-diphenyl-1H-pyrrole-3-carbonitrile CAS 477887-46-0
| CAS No. | 477887-46-0 |
| Molecular Formula | C28H24N4O2 |
| Molecular Weight | 448.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (E)-1-butyl-2-((4-nitrobenzylidene)amino)-4,5-diphenyl-1H-pyrrole-3-carbonitrile.
(E)-1-butyl-2-((4-nitrobenzylidene)amino)-4,5-diphenyl-1H-pyrrole-3-carbonitrile (CAS 477887-46-0), molecular formula C28H24N4O2 and molecular weight 448.52 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C28H24N4O2, (E)-1-butyl-2-((4-nitrobenzylidene)amino)-4,5-diphenyl-1H-pyrrole-3-carbonitrile contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 448.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), (E)-1-butyl-2-((4-nitrobenzylidene)amino)-4,5-diphenyl-1H-pyrrole-3-carbonitrile meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C28H24N4O2 |
| Molecular Weight | 448.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 3-((5-((4-Aminopiperidin-1-yl)methyl)pyrrolo[2,1-f][1,2,4]triazin-4-yl)amino)-5-(2-isopropyl-2H-tetrazol-5-yl)phenol, >98% (HPLC) (CAS 1699861-37-4)
- 1-[7-(4-Phenoxyphenyl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]-4-phenylpiperazine (CAS 338403-75-1)
- Dexamethasone 17-Propionate (CAS 15423-89-9)
- Dexamethasone 21-Propionate (CAS 3793-10-0)
- 4-Chloro-n-propylbutanamide (CAS 543717-62-0)
- 2-(5-carbamoyl-1H-pyrrole-3-sulfonamido)acetic acid (CAS 1354961-61-7)
- 3-Amino-5,6-dichloropyrazine-2-carboxamide (CAS 14229-27-7)
- 3-Hydroxybutanamide (CAS 24311-45-3)
- 4-(2-(Methylthio)ethyl)-3-tosyloxazolidin-5-one (CAS 62188-32-3)
- 2,6-diiodo-4-methylbenzoic acid (CAS 1048025-56-4)
- Ethyl 3,4-difluoro-5-methylphenylacetate (CAS 1804515-49-8)
- (S)-tert-Butyl 2-acetylazetidine-1-carboxylate (CAS 2396600-43-2)
- N-(1-(1-Ethyl-1H-benzo[d]imidazol-2-yl)ethyl)-3-nitroimidazo[1,2-a]pyridin-2-amine (CAS 1797066-77-3)
- Semaglutide impurity 67 (CAS CATO-C4X-222667)
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