(2E)-2-[(4-Methoxyphenyl)methylidene]-2,3,4,9-tetrahydro-1H-carbazol-1-one CAS 1147118-58-8
| CAS No. | 1147118-58-8 |
| Molecular Formula | C20H17NO2 |
| Molecular Weight | 303.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(2E)-2-[(4-Methoxyphenyl)methylidene]-2,3,4,9-tetrahydro-1H-carbazol-1-one (CAS 1147118-58-8), molecular formula C20H17NO2 and molecular weight 303.35 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (2E)-2-[(4-Methoxyphenyl)methylidene]-2,3,4,9-tetrahydro-1H-carbazol-1-one (C20H17NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 303.35 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).
As a certified reference material (CRM), (2E)-2-[(4-Methoxyphenyl)methylidene]-2,3,4,9-tetrahydro-1H-carbazol-1-one 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 | C20H17NO2 |
| Molecular Weight | 303.35 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, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 1 |
Related E Standards
- (2E)-2-[(2-Methoxyphenyl)methylidene]-2,3,4,9-tetrahydro-1H-carbazol-1-one (CAS 866138-43-4)
- (E)-3-((4-methoxyphenyl)amino)-1-(naphthalen-2-yl)prop-2-en-1-one (CAS 339014-55-0)
- 4-((4-Methoxyphenyl)(phenyl)amino)benzaldehyde (CAS 87755-82-6)
- 5-(4-Methoxyphenyl)-1-(3-methoxypropyl)-2-methyl-1H-pyrrole-3-carboxylic acid (CAS 879329-81-4)
- 5-(4-(4-Methoxyphenyl)piperazine-1-carbonyl)pyrrolidin-2-one (CAS 110957-23-8)
- 4-[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]-3-(methylsulfanyl)-1H-pyrazol-5-amine (CAS 1188304-93-9)
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