[(3Z)-1-[(4-Chlorophenyl)methyl]-5-nitro-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino pentanoate CAS 303998-37-0
| CAS No. | 303998-37-0 |
| Molecular Formula | C20H18ClN3O5 |
| Molecular Weight | 415.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
[(3Z)-1-[(4-Chlorophenyl)methyl]-5-nitro-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino pentanoate (CAS 303998-37-0), molecular formula C20H18ClN3O5 and molecular weight 415.83 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C20H18ClN3O5, [(3Z)-1-[(4-Chlorophenyl)methyl]-5-nitro-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino pentanoate contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 415.83 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), [(3Z)-1-[(4-Chlorophenyl)methyl]-5-nitro-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino pentanoate 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 | C20H18ClN3O5 |
| Molecular Weight | 415.83 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Z Standards
- N-(4-Chlorophenyl)-2-[4-(5-methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]acetamide (CAS 1775440-60-2)
- [(3Z)-1-[(4-Chlorophenyl)methyl]-5-nitro-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate (CAS 303998-48-3)
- 3-(3-Chlorophenyl)-6,7-diphenyl-2H-oxazolo[3,2-a][1,3,5]triazine-2,4(3H)-dione (CAS 35629-67-5)
- 3-(4-Chlorophenyl)-6,7-diphenyl-2H-oxazolo[3,2-a][1,3,5]triazine-2,4(3H)-dione (CAS 35629-68-6)
- 3-[(E)-1-(4-Chlorophenyl)-2-(dimethylamino)ethenesulfonyl]-5-(trifluoromethyl)pyridine-2-carbonitrile (CAS 551930-73-5)
- 5-((4-Chlorophenyl)sulfonyl)-N-(2,4-difluorophenyl)-1,2,3-thiadiazole-4-carboxamide (CAS 672951-17-6)
- 5-((4-Chlorophenyl)thio)-N-(3-(trifluoromethyl)phenyl)-1,2,3-thiadiazole-4-carboxamide (CAS 303151-35-1)
- 2-[(2-Chlorophenyl)sulfanyl]-3-[3-(trifluoromethyl)phenyl]quinoline (CAS 339103-24-1)
Recommended Standards
- 3-(2-Chloro-6-fluorophenyl)-5-methyl-4-[4-(3-nitrophenyl)-1,3-thiazol-2-yl]-1,2-oxazole (CAS 287176-94-7)
- Indometacin Impurity 19 (CAS CATO-C4X-147019)
- N'-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-N'-methylnaphthalene-2-sulfonohydrazide (CAS 338748-70-2)
- 5-Methyl-2-oxotetrahydrofuran-3-carbonitrile (CAS 76263-39-3)
- 2-(((9H-fluoren-9-yl)methoxy)carbonyl)-5-oxa-2-azaspiro[3.4]Octane-7-carboxylic acid (CAS 2219378-78-4)
- 4-Methyl-1-decanol (CAS 408309-43-3)
- 1-(Bromomethyl)-2-fluoro-5-methyl-3-(trifluoromethyl)benzene (CAS 1706438-74-5)
- 1-Iodo-2-(methylsulfonyl)benzene (CAS 110483-14-2)
- (3-(Azocan-1-ylmethyl)phenyl)methanamine (CAS 115174-13-5)
- (2,3-Dimethyl-2H-indazol-5-yl)methanamine (CAS 1234616-62-6)
- 4-Fluoro-3'-(trifluoromethoxy)-[1,1'-biphenyl]-3-amine (CAS 1261651-44-8)
- Salbutamol Impurity 110 (CAS 345322-10-3)
- (2S,4S)-1-tert-Butyl 2-methyl 4-((4-nitrobenzoyl)-oxy)pyrrolidine-1,2-dicarboxylate (CAS 168264-25-3)
- Protein Kinase C (19-36) Peptide (CAS 113731-96-7)
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